Add vpatch-CVE-2025-3248 rule and test

.appsec-tests/vpatch-CVE-2025-3248/CVE-2025-3248.yaml

@@ -0,0 +1,21 @@
+## autogenerated on 2025-05-09 10:25:34
+id: CVE-2025-3248
+info:
+  name: CVE-2025-3248
+  author: crowdsec
+  severity: info
+  description: CVE-2025-3248 testing
+  tags: appsec-testing
+http:
+  - raw:
+      - |
+        POST /api/v1/validate/code HTTP/1.1
+        Host: {{Hostname}}
+        Content-Type: application/json
+
+        {"code": "@exec('raise Exception(__import__(\"subprocess\").check_output([\"cat\", \"/etc/passwd\"]))')\ndef foo():\n  pass"}
+    cookie-reuse: true
+    matchers:
+    - type: status
+      status:
+       - 403

.appsec-tests/vpatch-CVE-2025-3248/config.yaml

@@ -0,0 +1,5 @@
+## autogenerated on 2025-05-09 10:25:34
+appsec-rules:
+  - ./appsec-rules/crowdsecurity/base-config.yaml
+  - ./appsec-rules/crowdsecurity/vpatch-CVE-2025-3248.yaml
+nuclei_template: CVE-2025-3248.yaml

appsec-rules/crowdsecurity/vpatch-CVE-2025-3248.yaml

@@ -0,0 +1,34 @@
+## autogenerated on 2025-05-09 10:25:34
+name: crowdsecurity/vpatch-CVE-2025-3248
+description: 'Detects unauthenticated remote code execution in Langflow via /api/v1/validate/code endpoint.'
+rules:
+  - and:
+      - zones:
+          - URI
+        transform:
+          - lowercase
+        match:
+          type: equals
+          value: /api/v1/validate/code
+      - zones:
+          - BODY_ARGS
+        variables:
+          - json.code
+        transform:
+          - lowercase
+          - urldecode
+        match:
+          type: contains
+          value: "@exec("
+
+labels:
+  type: exploit
+  service: http
+  confidence: 3
+  spoofable: 0
+  behavior: 'http:exploit'
+  label: 'Langflow - RCE'
+  classification:
+    - cve.CVE-2025-3248
+    - attack.T1190
+    - cwe.CWE-306

collections/crowdsecurity/appsec-virtual-patching.yaml

@@ -90,6 +90,7 @@ appsec-rules:
 - crowdsecurity/vpatch-CVE-2024-27292
 - crowdsecurity/vpatch-CVE-2025-24893
 - crowdsecurity/vpatch-CVE-2021-43798
+- crowdsecurity/vpatch-CVE-2025-3248
 author: crowdsecurity
 contexts:
 - crowdsecurity/appsec_base