Add vpatch-CVE-2026-1357 rule and test

.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

.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

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

collections/crowdsecurity/appsec-virtual-patching.yaml

@@ -157,6 +157,7 @@ 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