Add vpatch-CVE-2026-26217 rule and test

.appsec-tests/vpatch-CVE-2026-26217/CVE-2026-26217.yaml

@@ -0,0 +1,20 @@
+## autogenerated on 2026-09-16 13:21:50
+id: CVE-2026-26217
+info:
+  name: CVE-2026-26217
+  author: crowdsec
+  severity: info
+  description: CVE-2026-26217 testing
+  tags: appsec-testing
+http:
+  - method: POST
+    path:
+      - '{{BaseURL}}/execute_js'
+    headers:
+      Content-Type: application/json
+    body: '{"url": "file:///etc/passwd", "scripts": ["document.body.innerText"]}'
+    cookie-reuse: true
+    matchers:
+      - type: status
+        status:
+          - 403

.appsec-tests/vpatch-CVE-2026-26217/config.yaml

@@ -0,0 +1,5 @@
+## autogenerated on 2026-09-16 13:21:50
+appsec-rules:
+  - ./appsec-rules/crowdsecurity/base-config.yaml
+  - ./appsec-rules/crowdsecurity/vpatch-CVE-2026-26217.yaml
+nuclei_template: CVE-2026-26217.yaml

appsec-rules/crowdsecurity/vpatch-CVE-2026-26217.yaml

@@ -0,0 +1,35 @@
+## autogenerated on 2026-09-16 13:21:50
+name: crowdsecurity/vpatch-CVE-2026-26217
+description: 'Detects local file inclusion in Crawl4AI through a file scheme supplied to the execute_js endpoint.'
+rules:
+  - and:
+      - zones:
+          - URI
+        transform:
+          - urldecode
+          - lowercase
+        match:
+          type: contains
+          value: '/execute_js'
+      - zones:
+          - BODY_ARGS
+        variables:
+          - json.url
+        transform:
+          - urldecode
+          - lowercase
+        match:
+          type: contains
+          value: 'file://'
+
+labels:
+  type: exploit
+  service: http
+  confidence: 3
+  spoofable: 0
+  behavior: 'http:exploit'
+  label: 'Crawl4AI - LFI'
+  classification:
+    - cve.CVE-2026-26217
+    - attack.T1059
+    - cwe.CWE-22

collections/crowdsecurity/appsec-virtual-patching.yaml

@@ -158,6 +158,7 @@ appsec-rules:
 - crowdsecurity/vpatch-CVE-2020-8656
 - crowdsecurity/vpatch-CVE-2025-27222
 - crowdsecurity/vpatch-CVE-2025-64446
+- crowdsecurity/vpatch-CVE-2026-26217
 - crowdsecurity/vpatch-CVE-2020-10987
 - crowdsecurity/vpatch-CVE-2025-55182
 - crowdsecurity/vpatch-CVE-2024-6235