{"id":"CVE-2026-56742","revision":"eddbeb887b134172993fe2545c849d94","records":[{"revision":"eddbeb887b134172993fe2545c849d94","observedAt":"2026-10-25T14:19:10.848+00:00","statement":{"source":"nvd","id":"CVE-2026-56742","aliases":[],"title":"Cilium is a networking, observability, and security solution. Prior to 1.17.17, 1.18.11, and 1.19.5, Cilium clusters using Gateway API allow users with permissions to create or update namespaced HTTPRoutes to mirror HTTP traffic to any Serv…","description":"Cilium is a networking, observability, and security solution. Prior to 1.17.17, 1.18.11, and 1.19.5, Cilium clusters using Gateway API allow users with permissions to create or update namespaced HTTPRoutes to mirror HTTP traffic to any Service in any namespace, bypassing the ReferenceGrant authorization mechanism. Gateway API functionality is disabled by default. This issue is fixed in versions 1.17.17, 1.18.11, and 1.19.5.","state":0,"publishedAt":"2026-07-15T20:17:51.85+00:00","modifiedAt":"2026-07-17T17:48:48.26+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L","score":5.9,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L","score":8.9,"severity":"HIGH"}],"references":["https://github.com/cilium/cilium/commit/7422068aff67ac77c7dcc57aa5b9240c91333deb","https://github.com/cilium/cilium/commit/e0b1cef513ff910323f3743e9f3e3d86721e4857","https://github.com/cilium/cilium/commit/f23929cff682d6ed0dc158070812cb302fc0032b","https://github.com/cilium/cilium/commit/fd47963ea394d5e8fa4a88c40a79063430c512ca","https://github.com/cilium/cilium/releases/tag/v1.17.17","https://github.com/cilium/cilium/releases/tag/v1.18.11","https://github.com/cilium/cilium/releases/tag/v1.19.5","https://github.com/cilium/cilium/security/advisories/GHSA-w7c2-w76w-5hmj"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-56742","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-862"],"productCriteria":["cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-07-15T20:17:51.850","lastModified":"2026-07-17T17:48:48.260"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-56742","identifiers":["CVE-2026-56742"]},"retained":false,"historicalAffected":[]}],"coverage":[]}