{"id":"CVE-2026-66362","state":"PUBLISHED","title":"NGF vulnerability","description":"Description:\nWhen NGINX Plus is configured as the data plane for NGINX Gateway Fabric, an injection vulnerability exists in the NGINX configuration generator component of NGINX Gateway Fabric. User-supplied string values from the Authentication Filter Custom Resource Definition clientID or cookieName fields, or in the clientSecret field of a Secret referenced by an Authentication Filter, are rendered directly into NGINX configuration templates without sanitization or escaping. \n\nImpact:\nAn authenticated attacker with permission to create or modify these resources may craft values that inject arbitrary NGINX configuration directives. This is a control plane issue; there is no data plane exposure.","publishedAt":"2026-09-02T15:40:54.441Z","updatedAt":"2026-09-03T03:56:36.276Z","severity":{"score":8.6,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","source":"f5"},"assigner":"f5","products":["F5 NGINX Gateway Fabric"],"affected":[{"vendor":"F5","product":"NGINX Gateway Fabric","defaultStatus":"unknown","versions":[{"version":"2.5.0","status":"affected","lessThan":"2.6.8","versionType":"custom"}],"modules":["configuration generator component"]}],"references":["https://my.f5.com/manage/s/article/K000162600"],"weaknesses":["CWE-76"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/66xxx/CVE-2026-66362.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-66362","state":"PUBLISHED","datePublished":"2026-09-02T15:40:54.441Z","dateUpdated":"2026-09-03T03:56:36.276Z","assignerShortName":"f5","assignerOrgId":"9dacffd4-cb11-413f-8451-fbbfd4ddc0ab","dateReserved":"2026-07-30T21:15:36.935Z"},"containers":{"cna":{"title":"NGF vulnerability","descriptions":[{"lang":"en","value":"Description:\nWhen NGINX Plus is configured as the data plane for NGINX Gateway Fabric, an injection vulnerability exists in the NGINX configuration generator component of NGINX Gateway Fabric. User-supplied string values from the Authentication Filter Custom Resource Definition clientID or cookieName fields, or in the clientSecret field of a Secret referenced by an Authentication Filter, are rendered directly into NGINX configuration templates without sanitization or escaping. \n\nImpact:\nAn authenticated attacker with permission to create or modify these resources may craft values that inject arbitrary NGINX configuration directives. This is a control plane issue; there is no data plane exposure."}],"affected":[{"vendor":"F5","product":"NGINX Gateway Fabric","defaultStatus":"unknown","versions":[{"version":"2.5.0","status":"affected","lessThan":"2.6.8","versionType":"custom"}],"modules":["configuration generator component"]}],"references":[{"url":"https://my.f5.com/manage/s/article/K000162600","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.6,"baseSeverity":"HIGH","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-76","description":"CWE-76","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"f5","orgId":"9dacffd4-cb11-413f-8451-fbbfd4ddc0ab","dateUpdated":"2026-09-02T15:40:54.441Z"},"credits":[{"lang":"en","type":"finder","value":"F5 acknowledges Rushit Palesha (GitHub: rushitgit) and Sujal Tuladhar (EvilGenius) for bringing this issue to our attention and following the highest standards of coordinated disclosure."}],"datePublic":"2023-01-01T00:00:00.000Z","source":{"discovery":"EXTERNAL"},"workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<span style=\"background-color: rgb(255, 255, 255);\">\n\n<span style=\"background-color: rgb(255, 255, 255);\">As this attack is conducted by authenticated users with Kubernetes role-based access control (RBAC) write access to the affected CRDs, the only complete mitigation is to restrict that access to fully trusted administrators only.</span>\n\n</span>"}],"value":"As this attack is conducted by authenticated users with Kubernetes role-based access control (RBAC) write access to the affected CRDs, the only complete mitigation is to restrict that access to fully trusted administrators only."}],"x_generator":{"engine":"F5 SIRTBot v1.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-02T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-66362"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-03T03:56:36.276Z"}}]}}}