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Original file line number Diff line number Diff line change
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{
"schema_version": "1.4.0",
"id": "GHSA-42jc-v69j-g38f",
"modified": "2026-06-22T21:31:00Z",
"modified": "2026-06-22T21:31:01Z",
"published": "2026-06-22T21:31:00Z",
"aliases": [
"CVE-2026-39904"
],
"summary": "CVE-2026-39904: Uncontrolled Resource Consumption in ApplyTemplate() in GoPhish v0.12.1 Allows Attackers to Crash the Server (Denial of Service) via Malicious Office Document",
"details": "Gophish through 0.12.1 contains a denial of service vulnerability that allows authenticated users with the User role to exhaust server memory by uploading a crafted Office document as an email template attachment. The ApplyTemplate() function in models/attachment.go processes Office documents as ZIP archives and calls ioutil.ReadAll() on each contained file entry without enforcing size restrictions on uncompressed content, allowing a zip bomb payload to expand to several gigabytes in memory and cause the process to be terminated by the operating system.",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/gophish/gophish"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.12.1"
}
]
}
]
}
],
"affected": [],
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39904"
},
{
"type": "WEB",
"url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-38351"
},
{
"type": "WEB",
"url": "https://github.com/ashikmd7/GoPhish-0.12.1/blob/main/Unbounded%20Memory%20Allocation%20in%20Office%20Attachment%20Processing%20Leads%20to%20Server%20DoS/README.md"
},
{
"type": "PACKAGE",
"url": "https://github.com/gophish/gophish"
},
{
"type": "WEB",
"url": "https://github.com/gophish/gophish/blob/v0.12.1/models/attachment.go"
},
{
"type": "WEB",
"url": "https://github.com/gophish/gophish/releases/tag/v0.12.1"
},
{
"type": "WEB",
"url": "https://pkg.go.dev/github.com/gophish/gophish"
},
{
"type": "WEB",
"url": "https://securityvulnerability.io/vulnerability/CVE-2026-39904"
},
{
"type": "WEB",
"url": "https://vuldb.com/cve/CVE-2026-39904"
},
{
"type": "WEB",
"url": "https://vulners.com/cve/CVE-2026-39904"
},
{
"type": "WEB",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-39904"
},
{
"type": "WEB",
"url": "https://www.cvedetails.com/cve/CVE-2026-39904"
},
{
"type": "WEB",
"url": "https://www.tenable.com/cve/CVE-2026-39904"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/gophish-denial-of-service-via-office-document-upload"
}
],
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"severity": "HIGH",
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