From 98acc5e45dcf9cf1e6f651e5df9541245735f312 Mon Sep 17 00:00:00 2001
From: crowdsec-automation
 <63358111+crowdsec-automation@users.noreply.github.com>
Date: Wed, 15 Apr 2026 15:15:24 +0200
Subject: [PATCH 1/4] Add vpatch-CVE-2026-1357 rule

---
 .../crowdsecurity/vpatch-CVE-2026-1357.yaml   | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 appsec-rules/crowdsecurity/vpatch-CVE-2026-1357.yaml

diff --git a/appsec-rules/crowdsecurity/vpatch-CVE-2026-1357.yaml b/appsec-rules/crowdsecurity/vpatch-CVE-2026-1357.yaml
new file mode 100644
index 00000000000..d9275699436
--- /dev/null
+++ b/appsec-rules/crowdsecurity/vpatch-CVE-2026-1357.yaml
@@ -0,0 +1,40 @@
+## autogenerated on 2026-04-15 13:15:20
+name: crowdsecurity/vpatch-CVE-2026-1357
+description: 'Detects unauthenticated arbitrary file upload in WPvivid Backup & Migration plugin via wpvivid_action=send_to_site.'
+rules:
+  - and:
+      - zones:
+          - URI
+        transform:
+          - lowercase
+        match:
+          type: equals
+          value: /
+      - zones:
+          - BODY_ARGS
+        variables:
+          - wpvivid_action
+        transform:
+          - lowercase
+        match:
+          type: equals
+          value: send_to_site
+      - zones:
+          - FILENAMES
+        transform:
+          - lowercase
+        match:
+          type: contains
+          value: .php
+
+labels:
+  type: exploit
+  service: http
+  confidence: 3
+  spoofable: 0
+  behavior: 'http:exploit'
+  label: 'WPvivid Backup & Migration - File Upload'
+  classification:
+    - cve.CVE-2026-1357
+    - attack.T1190
+    - cwe.CWE-434

From 4402202510c395bd662aa347adcfcc96a5a2f568 Mon Sep 17 00:00:00 2001
From: crowdsec-automation
 <63358111+crowdsec-automation@users.noreply.github.com>
Date: Wed, 15 Apr 2026 15:15:26 +0200
Subject: [PATCH 2/4] Add vpatch-CVE-2026-1357 test config

---
 .appsec-tests/vpatch-CVE-2026-1357/config.yaml | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .appsec-tests/vpatch-CVE-2026-1357/config.yaml

diff --git a/.appsec-tests/vpatch-CVE-2026-1357/config.yaml b/.appsec-tests/vpatch-CVE-2026-1357/config.yaml
new file mode 100644
index 00000000000..d996b92df2e
--- /dev/null
+++ b/.appsec-tests/vpatch-CVE-2026-1357/config.yaml
@@ -0,0 +1,5 @@
+## autogenerated on 2026-04-15 13:15:20
+appsec-rules:
+  - ./appsec-rules/crowdsecurity/base-config.yaml
+  - ./appsec-rules/crowdsecurity/vpatch-CVE-2026-1357.yaml
+nuclei_template: CVE-2026-1357.yaml

From fd49004c3e4a1c9b9df2d1bbd98a26d244774f59 Mon Sep 17 00:00:00 2001
From: crowdsec-automation
 <63358111+crowdsec-automation@users.noreply.github.com>
Date: Wed, 15 Apr 2026 15:15:27 +0200
Subject: [PATCH 3/4] Add CVE-2026-1357.yaml test

---
 .../vpatch-CVE-2026-1357/CVE-2026-1357.yaml   | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 .appsec-tests/vpatch-CVE-2026-1357/CVE-2026-1357.yaml

diff --git a/.appsec-tests/vpatch-CVE-2026-1357/CVE-2026-1357.yaml b/.appsec-tests/vpatch-CVE-2026-1357/CVE-2026-1357.yaml
new file mode 100644
index 00000000000..1620e60cf8c
--- /dev/null
+++ b/.appsec-tests/vpatch-CVE-2026-1357/CVE-2026-1357.yaml
@@ -0,0 +1,21 @@
+## autogenerated on 2026-04-15 13:15:20
+id: CVE-2026-1357
+info:
+  name: CVE-2026-1357
+  author: crowdsec
+  severity: info
+  description: CVE-2026-1357 testing
+  tags: appsec-testing
+http:
+  - raw:
+      - |
+        POST / HTTP/1.1
+        Host: {{Hostname}}
+        Content-Type: application/x-www-form-urlencoded
+
+        wpvivid_action=send_to_site&wpvivid_content=MDAzQUJDMDAwMDAwMDAwMDAwMDExMDUGpYqxgOo0%2FZM3%2BLE%2B23CYS%2BI8Sbr6wwwU6dJweFxMk%2BOogH3GIpPZZMrm72oUS3vnrlf0AXv1vmGVBIbLo3QcQs%2B4JU7cLQw1kWByCFlYkpHcBuzxjEbVtT8VSdFgb6NLW6cpP4BdWT8bJx%2F%2FAOO09m3EFtf2sOcE%2BJjFJAew%2BELondwDkz3u5mssxGaQrlvWgaIlmPwz3FZx8dWC%2FHy7k4P3S5IJ7JV0tefjHJKCOzjPHngkZENu1uI2LmE6JaeF7XdXJCcmFOrNex4yJgIO0raawogHW457fM4wXKDnrM3bwxeLn5KwvAgadaTj4F9zWHxnjBmpa%2BtIaohISVcA5%2BGv6cAA95rzOoXBGUaI
+    cookie-reuse: true
+    matchers:
+    - type: status
+      status:
+       - 403

From ff88aaa45192614d039923e3a38d0a1674761a2b Mon Sep 17 00:00:00 2001
From: crowdsec-automation
 <63358111+crowdsec-automation@users.noreply.github.com>
Date: Wed, 15 Apr 2026 15:15:29 +0200
Subject: [PATCH 4/4] Add vpatch-CVE-2026-1357 rule to vpatch collection

---
 collections/crowdsecurity/appsec-virtual-patching.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/collections/crowdsecurity/appsec-virtual-patching.yaml b/collections/crowdsecurity/appsec-virtual-patching.yaml
index 7ccf9a8bf03..a41790ce644 100644
--- a/collections/crowdsecurity/appsec-virtual-patching.yaml
+++ b/collections/crowdsecurity/appsec-virtual-patching.yaml
@@ -156,6 +156,7 @@ appsec-rules:
 - crowdsecurity/vpatch-CVE-2020-10987
 - crowdsecurity/vpatch-CVE-2025-55182
 - crowdsecurity/vpatch-CVE-2024-6235
+- crowdsecurity/vpatch-CVE-2026-1357
 - crowdsecurity/vpatch-CVE-2021-34427
 - crowdsecurity/vpatch-CVE-2018-13317
 - crowdsecurity/vpatch-CVE-2025-9316