Moderate severityNVD Advisory· Published Jul 7, 2026· Updated Jul 8, 2026
CiliumLocalRedirectPolicy addressMatcher allows cross-namespace service traffic hijacking and can break service translation
CVE-2026-53935
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.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/cilium/ciliumGo | >= 1.19.0, < 1.19.4 | 1.19.4 |
github.com/cilium/ciliumGo | >= 1.18.2, < 1.18.10 | 1.18.10 |
github.com/cilium/ciliumGo | < 1.17.16 | 1.17.16 |
Affected products
16- osv-coords15 versionspkg:apk/chainguard/hubble-ui-backendpkg:apk/chainguard/hubble-ui-backend-fipspkg:apk/chainguard/kubescapepkg:apk/chainguard/kubescape-operatorpkg:apk/chainguard/kubescape-operator-fipspkg:apk/chainguard/kubescape-serverpkg:apk/chainguard/kubescape-server-downloaderpkg:apk/chainguard/kubescape-server-fipspkg:apk/chainguard/kubescape-server-fips-downloaderpkg:apk/wolfi/hubble-ui-backendpkg:apk/wolfi/kubescapepkg:apk/wolfi/kubescape-operatorpkg:bitnami/ciliumpkg:bitnami/cilium-operatorpkg:bitnami/hubble-relay
< 0.13.5-r8+ 14 more
- (no CPE)range: < 0.13.5-r8
- (no CPE)range: < 0.13.5-r8
- (no CPE)range: < 4.0.10-r5
- (no CPE)range: < 0.2.151-r5
- (no CPE)range: < 0.2.151-r7
- (no CPE)range: < 4.0.10-r5
- (no CPE)range: < 4.0.10-r5
- (no CPE)range: < 4.0.10-r5
- (no CPE)range: < 4.0.10-r5
- (no CPE)range: < 0.13.5-r8
- (no CPE)range: < 4.0.10-r5
- (no CPE)range: < 0.2.151-r5
- (no CPE)range: < 1.17.16
- (no CPE)range: < 1.17.16
- (no CPE)range: < 1.17.16
Patches
Vulnerability mechanics
References
11- github.com/advisories/GHSA-q6h5-q3q6-f87xghsaADVISORY
- github.com/cilium/cilium/commit/81d446395673dc2c684c047c12715caffac1a351mitrex_refsource_MISC
- github.com/cilium/cilium/commit/92ca32eda85aa0c7611c28221cc26fa08be17ebcmitrex_refsource_MISC
- github.com/cilium/cilium/commit/fe7eb53c7aac9fa7ec610b1975d73fbbb198c66dmitrex_refsource_MISC
- github.com/cilium/cilium/pull/44512ghsaWEB
- github.com/cilium/cilium/pull/44584ghsaWEB
- github.com/cilium/cilium/pull/44585ghsaWEB
- github.com/cilium/cilium/pull/45412mitrex_refsource_MISC
- github.com/cilium/cilium/pull/45584mitrex_refsource_MISC
- github.com/cilium/cilium/pull/45585mitrex_refsource_MISC
- github.com/cilium/cilium/security/advisories/GHSA-q6h5-q3q6-f87xghsax_refsource_CONFIRMWEB
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