Add vpatch-CVE-2026-1357 rule

Author: crowdsec-automation

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