{"cve":"CVE-2026-53935","nvd":{"published":"2026-07-07T21:17:27.000","modified":"2026-07-10T17:56:00.910","status":"Deferred","description":"Cilium is a networking, observability, and security solution. Prior to 1.17.16, from 1.18.2 to 1.18.9, and from 1.19.0 to 1.19.3, users with the ability to create CiliumLocalRedirectPolicies can specify arbitrary ClusterIPs via addressMatcher, enabling hijacking traffic to Services in any namespace and bypassing namespace scoping enforced by serviceMatcher; deleting such a policy can also corrupt Cilium internal service state and stop service translation for the affected Service. This issue is fixed in versions 1.17.16, 1.18.10, and 1.19.4.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:H","score":6.9},"cwes":["CWE-863"],"references":["https://github.com/cilium/cilium/commit/81d446395673dc2c684c047c12715caffac1a351","https://github.com/cilium/cilium/commit/92ca32eda85aa0c7611c28221cc26fa08be17ebc","https://github.com/cilium/cilium/commit/fe7eb53c7aac9fa7ec610b1975d73fbbb198c66d","https://github.com/cilium/cilium/pull/45412","https://github.com/cilium/cilium/pull/45584"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:42:16.820116992+00:00"},"epss":{"cve":"CVE-2026-53935","score":0.0034,"percentile":0.27536,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-q6h5-q3q6-f87x","url":"https://osv.dev/vulnerability/GHSA-q6h5-q3q6-f87x","summary":"CiliumLocalRedirectPolicy addressMatcher allows cross-namespace service traffic hijacking and can break service translation","modified":"2026-09-10T03:51:11.806176116Z","packages":[{"ecosystem":"Go","name":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","ranges":[">=1.19.0 <1.19.4"],"fixed":["1.19.4"]},{"ecosystem":"Go","name":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","ranges":[">=1.18.2 <1.18.10"],"fixed":["1.18.10"]},{"ecosystem":"Go","name":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","ranges":["<1.17.16"],"fixed":["1.17.16"]}]},{"id":"GO-2026-5914","url":"https://osv.dev/vulnerability/GO-2026-5914","summary":"CiliumLocalRedirectPolicy addressMatcher allows cross-namespace service traffic hijacking and can break service translation in github.com/cilium/cilium","modified":"2026-07-14T10:11:29.500493636Z","packages":[{"ecosystem":"Go","name":"github.com/cilium/cilium","purl":"pkg:golang/github.com/cilium/cilium","ranges":["<1.17.16",">=1.18.2 <1.18.10",">=1.19.0 <1.19.4"],"fixed":["1.17.16","1.18.10","1.19.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}