Vulnerable Library - css-loader-6.5.1.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/postcss/package.json
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Vulnerabilities
| Vulnerability |
Severity |
 CVSS |
Dependency |
Type |
Fixed in (css-loader version) |
Remediation Possible** |
| CVE-2026-45623 |
 High |
7.5 |
postcss-8.4.5.tgz |
Transitive |
6.6.0 |
❌ |
| CVE-2026-73086 |
High |
7.4 |
nanoid-3.2.0.tgz |
Transitive |
6.6.0 |
❌ |
| CVE-2026-41305 |
 Medium |
6.1 |
postcss-8.4.5.tgz |
Transitive |
6.6.0 |
❌ |
| CVE-2026-67214 |
Medium |
5.9 |
nanoid-3.2.0.tgz |
Transitive |
N/A* |
❌ |
| CVE-2026-67213 |
Medium |
5.9 |
nanoid-3.2.0.tgz |
Transitive |
N/A* |
❌ |
| CVE-2026-69153 |
Medium |
5.3 |
postcss-8.4.5.tgz |
Transitive |
N/A* |
❌ |
| CVE-2023-44270 |
Medium |
5.3 |
postcss-8.4.5.tgz |
Transitive |
6.6.0 |
❌ |
| CVE-2026-9358 |
Medium |
4.3 |
postcss-selector-parser-6.0.9.tgz |
Transitive |
N/A* |
❌ |
| CVE-2024-55565 |
Medium |
4.3 |
nanoid-3.2.0.tgz |
Transitive |
6.6.0 |
❌ |
*For some transitive vulnerabilities, there is no version of direct dependency with a fix. Check the "Details" section below to see if there is a version of transitive dependency where vulnerability is fixed.
**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation
Details
CVE-2026-45623
Vulnerable Library - postcss-8.4.5.tgz
Tool for transforming styles with JS plugins
Library home page: https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/postcss/package.json
Dependency Hierarchy:
- css-loader-6.5.1.tgz (Root Library)
- ❌ postcss-8.4.5.tgz (Vulnerable Library)
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. In versions 8.5.11 and prior, the PreviousMap parses the /*# sourceMappingURL=PATH */ comment from any CSS string passed to process() and dereferences PATH against the local filesystem with no scheme, allowlist, or traversal check. An attacker who controls the CSS input can cause the host process to read any file readable by Node and leak the first ~10 bytes of its content through the resulting JSON.parse SyntaxError message. The bug also yields a precise file-existence oracle and a controllable-read primitive that may be combined with large-file targets for DoS. The behaviour is triggered with PostCSS's default options — no from, no map, no plugins required — and is therefore reachable from any pipeline that runs untrusted CSS through PostCSS (CMS themes, user-uploaded styles, browser-extension/userstyle processors, build pipelines for third-party packages, blog comment renderers, etc.). This issue has been fixed in version 8.5.12.
Publish Date: 2026-07-27
URL: CVE-2026-45623
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: None
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Release Date: 2026-07-23
Fix Resolution (postcss): 8.5.12
Direct dependency fix Resolution (css-loader): 6.6.0
Step up your Open Source Security Game with Mend here
CVE-2026-73086
Vulnerable Library - nanoid-3.2.0.tgz
A tiny (130 bytes), secure URL-friendly unique string ID generator
Library home page: https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/nanoid/package.json
Dependency Hierarchy:
- css-loader-6.5.1.tgz (Root Library)
- postcss-8.4.5.tgz
- ❌ nanoid-3.2.0.tgz (Vulnerable Library)
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
nanoid is a secure, URL-friendly, unique string ID generator for JavaScript. Prior to versions 3.3.12 and 5.1.11, the nanoid(size) function in index.js and index.cjs coerces the user-influenced size parameter to a signed 32-bit integer, allowing a value of 2147483648 to become -2147483648 and corrupt the process-wide CSPRNG poolOffset in fillPool(), which causes subsequent session tokens, CSRF tokens, API keys, and unique identifiers to become the deterministic string "uuuuuuuuuuuuuuuuuuuuu" until the process restarts. This issue is fixed in versions 3.3.12 and 5.1.11.
Publish Date: 2026-08-11
URL: CVE-2026-73086
CVSS 3 Score Details (7.4)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-xwg4-73v4-xw9w
Release Date: 2026-08-11
Fix Resolution (nanoid): 3.3.12
Direct dependency fix Resolution (css-loader): 6.6.0
Step up your Open Source Security Game with Mend here
CVE-2026-41305
Vulnerable Library - postcss-8.4.5.tgz
Tool for transforming styles with JS plugins
Library home page: https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/postcss/package.json
Dependency Hierarchy:
- css-loader-6.5.1.tgz (Root Library)
- ❌ postcss-8.4.5.tgz (Vulnerable Library)
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. Versions prior to 8.5.10 do not escape "</style>" sequences when stringifying CSS ASTs. When user-submitted CSS is parsed and re-stringified for embedding in HTML "<style>" tags, "</style>" in CSS values breaks out of the style context, enabling XSS. Version 8.5.10 fixes the issue.
Publish Date: 2026-04-24
URL: CVE-2026-41305
CVSS 3 Score Details (6.1)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Scope: Changed
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-qx2v-qp2m-jg93
Release Date: 2026-04-24
Fix Resolution (postcss): 8.5.10
Direct dependency fix Resolution (css-loader): 6.6.0
Step up your Open Source Security Game with Mend here
CVE-2026-67214
Vulnerable Library - nanoid-3.2.0.tgz
A tiny (130 bytes), secure URL-friendly unique string ID generator
Library home page: https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/nanoid/package.json
Dependency Hierarchy:
- css-loader-6.5.1.tgz (Root Library)
- postcss-8.4.5.tgz
- ❌ nanoid-3.2.0.tgz (Vulnerable Library)
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
nanoid (Nano ID) before 5.1.16 contains an infinite loop in the customAlphabet and nanoid functions of its non-secure module (nanoid/non-secure). When these functions are given a negative size, the loop counter is decremented from a negative value and never reaches its termination condition, spinning indefinitely and hanging the calling thread. An application that passes an unvalidated, attacker-controlled negative size to these functions is exposed to a denial-of-service condition.
Publish Date: 2026-07-29
URL: CVE-2026-67214
CVSS 3 Score Details (5.9)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Release Date: 2026-07-29
Fix Resolution: nanoid - 5.1.16,nanoid - 5.1.16,https://github.com/ai/nanoid.git - 5.1.16
Step up your Open Source Security Game with Mend here
CVE-2026-67213
Vulnerable Library - nanoid-3.2.0.tgz
A tiny (130 bytes), secure URL-friendly unique string ID generator
Library home page: https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/nanoid/package.json
Dependency Hierarchy:
- css-loader-6.5.1.tgz (Root Library)
- postcss-8.4.5.tgz
- ❌ nanoid-3.2.0.tgz (Vulnerable Library)
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
nanoid (Nano ID) before 5.1.6 contains an infinite loop in the customAlphabet and customRandom functions. When these functions are configured with a size of 0, the internal generation loop never satisfies its exit condition and spins indefinitely, hanging the calling thread. An application that passes an unvalidated, attacker-controlled size of 0 to these functions is exposed to a denial-of-service condition.
Publish Date: 2026-07-29
URL: CVE-2026-67213
CVSS 3 Score Details (5.9)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Release Date: 2026-07-29
Fix Resolution: nanoid - 5.1.6,nanoid - 5.1.6,https://github.com/ai/nanoid.git - 5.1.6
Step up your Open Source Security Game with Mend here
CVE-2026-69153
Vulnerable Library - postcss-8.4.5.tgz
Tool for transforming styles with JS plugins
Library home page: https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/postcss/package.json
Dependency Hierarchy:
- css-loader-6.5.1.tgz (Root Library)
- ❌ postcss-8.4.5.tgz (Vulnerable Library)
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. Prior to 8.5.19, if from is unset, an attacker can cause PreviousMap.loadFile() to read an unintended source-map file by supplying an absolute or directory-traversal sourceMappingURL. The resulting map’s sources and sourcesContent may then be exposed to the application. This issue is fixed in version 8.5.19.
Publish Date: 2026-08-03
URL: CVE-2026-69153
CVSS 3 Score Details (5.3)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: None
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Release Date: 2026-08-03
Fix Resolution: https://github.com/postcss/postcss.git - 8.5.23
Step up your Open Source Security Game with Mend here
CVE-2023-44270
Vulnerable Library - postcss-8.4.5.tgz
Tool for transforming styles with JS plugins
Library home page: https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/postcss/package.json
Dependency Hierarchy:
- css-loader-6.5.1.tgz (Root Library)
- ❌ postcss-8.4.5.tgz (Vulnerable Library)
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
An issue was discovered in PostCSS before 8.4.31. The vulnerability affects linters using PostCSS to parse external untrusted CSS. An attacker can prepare CSS in such a way that it will contains parts parsed by PostCSS as a CSS comment. After processing by PostCSS, it will be included in the PostCSS output in CSS nodes (rules, properties) despite being included in a comment.
Publish Date: 2023-09-29
URL: CVE-2023-44270
CVSS 3 Score Details (5.3)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-7fh5-64p2-3v2j
Release Date: 2023-09-29
Fix Resolution (postcss): 8.4.31
Direct dependency fix Resolution (css-loader): 6.6.0
Step up your Open Source Security Game with Mend here
CVE-2026-9358
Vulnerable Library - postcss-selector-parser-6.0.9.tgz
> Selector parser with built in methods for working with selector strings.
Library home page: https://registry.npmjs.org/postcss-selector-parser/-/postcss-selector-parser-6.0.9.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/postcss-selector-parser/package.json
Dependency Hierarchy:
- css-loader-6.5.1.tgz (Root Library)
- postcss-modules-local-by-default-4.0.0.tgz
- ❌ postcss-selector-parser-6.0.9.tgz (Vulnerable Library)
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
A vulnerability was determined in postcss-selector-parser up to 6.1.2/7.1.2. Affected is the function toString of the file src/selectors/container.js of the component AST Serialization. Executing a manipulation can lead to uncontrolled recursion. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. Upgrading to version 6.1.3 and 7.1.3 is able to address this issue. This patch is called 5bc698cef66f8abd12610dc623e5d67cbc0f869d. It is suggested to upgrade the affected component. The vendor explains, that according to his definition "DoS on server-side on user-generated CSS is low risk for us (since most users compile own CSS with PostCSS)." The commits were backported to 6.x branch, which was the most downloaded version.
Publish Date: 2026-05-24
URL: CVE-2026-9358
CVSS 3 Score Details (4.3)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: Low
For more information on CVSS3 Scores, click here.
Step up your Open Source Security Game with Mend here
CVE-2024-55565
Vulnerable Library - nanoid-3.2.0.tgz
A tiny (130 bytes), secure URL-friendly unique string ID generator
Library home page: https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/nanoid/package.json
Dependency Hierarchy:
- css-loader-6.5.1.tgz (Root Library)
- postcss-8.4.5.tgz
- ❌ nanoid-3.2.0.tgz (Vulnerable Library)
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
nanoid (aka Nano ID) before 5.0.9 mishandles non-integer values. 3.3.8 is also a fixed version.
Publish Date: 2024-12-09
URL: CVE-2024-55565
CVSS 3 Score Details (4.3)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: Low
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: https://www.cve.org/CVERecord?id=CVE-2024-55565
Release Date: 2024-12-09
Fix Resolution (nanoid): 3.3.8
Direct dependency fix Resolution (css-loader): 6.6.0
Step up your Open Source Security Game with Mend here
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/postcss/package.json
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Vulnerabilities
*For some transitive vulnerabilities, there is no version of direct dependency with a fix. Check the "Details" section below to see if there is a version of transitive dependency where vulnerability is fixed.
**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation
Details
Vulnerable Library - postcss-8.4.5.tgz
Tool for transforming styles with JS plugins
Library home page: https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/postcss/package.json
Dependency Hierarchy:
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. In versions 8.5.11 and prior, the PreviousMap parses the /*# sourceMappingURL=PATH */ comment from any CSS string passed to process() and dereferences PATH against the local filesystem with no scheme, allowlist, or traversal check. An attacker who controls the CSS input can cause the host process to read any file readable by Node and leak the first ~10 bytes of its content through the resulting JSON.parse SyntaxError message. The bug also yields a precise file-existence oracle and a controllable-read primitive that may be combined with large-file targets for DoS. The behaviour is triggered with PostCSS's default options — no from, no map, no plugins required — and is therefore reachable from any pipeline that runs untrusted CSS through PostCSS (CMS themes, user-uploaded styles, browser-extension/userstyle processors, build pipelines for third-party packages, blog comment renderers, etc.). This issue has been fixed in version 8.5.12.
Publish Date: 2026-07-27
URL: CVE-2026-45623
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: None
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Release Date: 2026-07-23
Fix Resolution (postcss): 8.5.12
Direct dependency fix Resolution (css-loader): 6.6.0
Step up your Open Source Security Game with Mend here
Vulnerable Library - nanoid-3.2.0.tgz
A tiny (130 bytes), secure URL-friendly unique string ID generator
Library home page: https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/nanoid/package.json
Dependency Hierarchy:
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
nanoid is a secure, URL-friendly, unique string ID generator for JavaScript. Prior to versions 3.3.12 and 5.1.11, the nanoid(size) function in index.js and index.cjs coerces the user-influenced size parameter to a signed 32-bit integer, allowing a value of 2147483648 to become -2147483648 and corrupt the process-wide CSPRNG poolOffset in fillPool(), which causes subsequent session tokens, CSRF tokens, API keys, and unique identifiers to become the deterministic string "uuuuuuuuuuuuuuuuuuuuu" until the process restarts. This issue is fixed in versions 3.3.12 and 5.1.11.
Publish Date: 2026-08-11
URL: CVE-2026-73086
CVSS 3 Score Details (7.4)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-xwg4-73v4-xw9w
Release Date: 2026-08-11
Fix Resolution (nanoid): 3.3.12
Direct dependency fix Resolution (css-loader): 6.6.0
Step up your Open Source Security Game with Mend here
Vulnerable Library - postcss-8.4.5.tgz
Tool for transforming styles with JS plugins
Library home page: https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/postcss/package.json
Dependency Hierarchy:
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. Versions prior to 8.5.10 do not escape "</style>" sequences when stringifying CSS ASTs. When user-submitted CSS is parsed and re-stringified for embedding in HTML "<style>" tags, "</style>" in CSS values breaks out of the style context, enabling XSS. Version 8.5.10 fixes the issue.
Publish Date: 2026-04-24
URL: CVE-2026-41305
CVSS 3 Score Details (6.1)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Scope: Changed
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-qx2v-qp2m-jg93
Release Date: 2026-04-24
Fix Resolution (postcss): 8.5.10
Direct dependency fix Resolution (css-loader): 6.6.0
Step up your Open Source Security Game with Mend here
Vulnerable Library - nanoid-3.2.0.tgz
A tiny (130 bytes), secure URL-friendly unique string ID generator
Library home page: https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/nanoid/package.json
Dependency Hierarchy:
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
nanoid (Nano ID) before 5.1.16 contains an infinite loop in the customAlphabet and nanoid functions of its non-secure module (nanoid/non-secure). When these functions are given a negative size, the loop counter is decremented from a negative value and never reaches its termination condition, spinning indefinitely and hanging the calling thread. An application that passes an unvalidated, attacker-controlled negative size to these functions is exposed to a denial-of-service condition.
Publish Date: 2026-07-29
URL: CVE-2026-67214
CVSS 3 Score Details (5.9)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Release Date: 2026-07-29
Fix Resolution: nanoid - 5.1.16,nanoid - 5.1.16,https://github.com/ai/nanoid.git - 5.1.16
Step up your Open Source Security Game with Mend here
Vulnerable Library - nanoid-3.2.0.tgz
A tiny (130 bytes), secure URL-friendly unique string ID generator
Library home page: https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/nanoid/package.json
Dependency Hierarchy:
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
nanoid (Nano ID) before 5.1.6 contains an infinite loop in the customAlphabet and customRandom functions. When these functions are configured with a size of 0, the internal generation loop never satisfies its exit condition and spins indefinitely, hanging the calling thread. An application that passes an unvalidated, attacker-controlled size of 0 to these functions is exposed to a denial-of-service condition.
Publish Date: 2026-07-29
URL: CVE-2026-67213
CVSS 3 Score Details (5.9)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Release Date: 2026-07-29
Fix Resolution: nanoid - 5.1.6,nanoid - 5.1.6,https://github.com/ai/nanoid.git - 5.1.6
Step up your Open Source Security Game with Mend here
Vulnerable Library - postcss-8.4.5.tgz
Tool for transforming styles with JS plugins
Library home page: https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/postcss/package.json
Dependency Hierarchy:
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. Prior to 8.5.19, if from is unset, an attacker can cause PreviousMap.loadFile() to read an unintended source-map file by supplying an absolute or directory-traversal sourceMappingURL. The resulting map’s sources and sourcesContent may then be exposed to the application. This issue is fixed in version 8.5.19.
Publish Date: 2026-08-03
URL: CVE-2026-69153
CVSS 3 Score Details (5.3)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: None
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Release Date: 2026-08-03
Fix Resolution: https://github.com/postcss/postcss.git - 8.5.23
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Vulnerable Library - postcss-8.4.5.tgz
Tool for transforming styles with JS plugins
Library home page: https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/postcss/package.json
Dependency Hierarchy:
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
An issue was discovered in PostCSS before 8.4.31. The vulnerability affects linters using PostCSS to parse external untrusted CSS. An attacker can prepare CSS in such a way that it will contains parts parsed by PostCSS as a CSS comment. After processing by PostCSS, it will be included in the PostCSS output in CSS nodes (rules, properties) despite being included in a comment.
Publish Date: 2023-09-29
URL: CVE-2023-44270
CVSS 3 Score Details (5.3)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-7fh5-64p2-3v2j
Release Date: 2023-09-29
Fix Resolution (postcss): 8.4.31
Direct dependency fix Resolution (css-loader): 6.6.0
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Vulnerable Library - postcss-selector-parser-6.0.9.tgz
> Selector parser with built in methods for working with selector strings.
Library home page: https://registry.npmjs.org/postcss-selector-parser/-/postcss-selector-parser-6.0.9.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/postcss-selector-parser/package.json
Dependency Hierarchy:
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
A vulnerability was determined in postcss-selector-parser up to 6.1.2/7.1.2. Affected is the function toString of the file src/selectors/container.js of the component AST Serialization. Executing a manipulation can lead to uncontrolled recursion. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. Upgrading to version 6.1.3 and 7.1.3 is able to address this issue. This patch is called 5bc698cef66f8abd12610dc623e5d67cbc0f869d. It is suggested to upgrade the affected component. The vendor explains, that according to his definition "DoS on server-side on user-generated CSS is low risk for us (since most users compile own CSS with PostCSS)." The commits were backported to 6.x branch, which was the most downloaded version.
Publish Date: 2026-05-24
URL: CVE-2026-9358
CVSS 3 Score Details (4.3)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: Low
For more information on CVSS3 Scores, click here.Step up your Open Source Security Game with Mend here
Vulnerable Library - nanoid-3.2.0.tgz
A tiny (130 bytes), secure URL-friendly unique string ID generator
Library home page: https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/nanoid/package.json
Dependency Hierarchy:
Found in HEAD commit: e103b6386c0031666a1203e2e1dc93586e0cd828
Found in base branch: main
Vulnerability Details
nanoid (aka Nano ID) before 5.0.9 mishandles non-integer values. 3.3.8 is also a fixed version.
Publish Date: 2024-12-09
URL: CVE-2024-55565
CVSS 3 Score Details (4.3)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: Low
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: https://www.cve.org/CVERecord?id=CVE-2024-55565
Release Date: 2024-12-09
Fix Resolution (nanoid): 3.3.8
Direct dependency fix Resolution (css-loader): 6.6.0
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