Add vpatch-CVE-2026-39808 rule and test

.appsec-tests/vpatch-CVE-2026-39808/CVE-2026-39808.yaml

@@ -0,0 +1,18 @@
+## autogenerated on 2026-06-17 10:36:06
+id: CVE-2026-39808
+info:
+  name: CVE-2026-39808
+  author: crowdsec
+  severity: info
+  description: CVE-2026-39808 testing
+  tags: appsec-testing
+http:
+  - raw:
+      - |
+        GET /fortisandbox/job-detail/tracer-behavior?jid=%7c%28echo+test+%3e+%2fweb%2fng%2ftestfile.txt%29%7c HTTP/1.1
+        Host: {{Hostname}}
+    cookie-reuse: true
+    matchers:
+    - type: status
+      status:
+       - 403

.appsec-tests/vpatch-CVE-2026-39808/config.yaml

@@ -0,0 +1,5 @@
+## autogenerated on 2026-06-17 10:36:06
+appsec-rules:
+  - ./appsec-rules/crowdsecurity/base-config.yaml
+  - ./appsec-rules/crowdsecurity/vpatch-CVE-2026-39808.yaml
+nuclei_template: CVE-2026-39808.yaml

appsec-rules/crowdsecurity/vpatch-CVE-2026-39808.yaml

@@ -0,0 +1,35 @@
+## autogenerated on 2026-06-17 10:36:06
+name: crowdsecurity/vpatch-CVE-2026-39808
+description: 'Detects command injection in Fortinet FortiSandbox via crafted jid parameter in tracer-behavior endpoint.'
+rules:
+  - and:
+      - zones:
+          - URI
+        transform:
+          - lowercase
+          - urldecode
+        match:
+          type: contains
+          value: /fortisandbox/job-detail/tracer-behavior
+      - zones:
+          - ARGS
+        variables:
+          - jid
+        transform:
+          - lowercase
+          - urldecode
+        match:
+          type: contains
+          value: '|('
+
+labels:
+  type: exploit
+  service: http
+  confidence: 3
+  spoofable: 0
+  behavior: 'http:exploit'
+  label: 'FortiSandbox - RCE'
+  classification:
+    - cve.CVE-2026-39808
+    - attack.T1190
+    - cwe.CWE-78

collections/crowdsecurity/appsec-virtual-patching.yaml

@@ -44,6 +44,7 @@ appsec-rules:
 - crowdsecurity/vpatch-CVE-2023-46805
 - crowdsecurity/vpatch-CVE-2024-23897
 - crowdsecurity/vpatch-CVE-2023-22527
+- crowdsecurity/vpatch-CVE-2026-39808
 - crowdsecurity/vpatch-CVE-2024-5057
 - crowdsecurity/vpatch-CVE-2023-35078
 - crowdsecurity/vpatch-CVE-2023-35082