Add vpatch-CVE-2025-59718 rule and test

.appsec-tests/vpatch-CVE-2025-59718/CVE-2025-59718.yaml

@@ -0,0 +1,24 @@
+## autogenerated on 2025-12-19 11:25:05
+id: CVE-2025-59718
+info:
+  name: CVE-2025-59718
+  author: crowdsec
+  severity: info
+  description: CVE-2025-59718 testing
+  tags: appsec-testing
+http:
+  - raw:
+      - |
+        POST /remote/saml/login HTTP/1.1
+        Host: {{Hostname}}
+        Content-Type: application/x-www-form-urlencoded
+
+        SAMLResponse={{b64saml}}&RelayState=
+    payloads:
+      b64saml:
+        - "{{base64('<samlp:Response xmlns:samlp=\"urn:oasis:names:tc:SAML:2.0:protocol\"><saml:Issuer xmlns:saml=\"urn:oasis:names:tc:SAML:2.0:assertion\">https://sso.forticloud.com</saml:Issuer></samlp:Response>')}}"
+    cookie-reuse: true
+    matchers:
+    - type: status
+      status:
+       - 403

.appsec-tests/vpatch-CVE-2025-59718/config.yaml

@@ -0,0 +1,5 @@
+## autogenerated on 2025-12-19 11:25:05
+appsec-rules:
+  - ./appsec-rules/crowdsecurity/base-config.yaml
+  - ./appsec-rules/crowdsecurity/vpatch-CVE-2025-59718.yaml
+nuclei_template: CVE-2025-59718.yaml

appsec-rules/crowdsecurity/vpatch-CVE-2025-59718.yaml

@@ -0,0 +1,41 @@
+## autogenerated on 2025-12-19 11:25:05
+name: crowdsecurity/vpatch-CVE-2025-59718
+description: 'Detects Fortinet FortiCloud SSO authentication bypass via crafted SAMLResponse (CVE-2025-59718)'
+rules:
+  - and:
+      - zones:
+          - URI
+        transform:
+          - lowercase
+        match:
+          type: endsWith
+          value: /remote/saml/login
+      - zones:
+          - BODY_ARGS_NAMES
+        transform:
+          - lowercase
+        match:
+          type: equals
+          value: samlresponse
+      - zones:
+          - BODY_ARGS
+        variables:
+          - samlresponse
+        transform:
+          - lowercase
+          - b64decode
+        match:
+          type: contains
+          value: '<saml:issuer>https://sso.forticloud.com</saml:issuer>'
+
+labels:
+  type: exploit
+  service: http
+  confidence: 3
+  spoofable: 0
+  behavior: 'http:exploit'
+  label: 'Fortinet FortiCloud - Authentication Bypass'
+  classification:
+    - cve.CVE-2025-59718
+    - attack.T1556
+    - cwe.CWE-287

collections/crowdsecurity/appsec-virtual-patching.yaml

@@ -144,6 +144,7 @@ appsec-rules:
 - crowdsecurity/vpatch-CVE-2025-9316
 - crowdsecurity/vpatch-CVE-2025-11700
 - crowdsecurity/vpatch-CVE-2025-13315
+- crowdsecurity/vpatch-CVE-2025-59718
 author: crowdsecurity
 contexts:
 - crowdsecurity/appsec_base