cve.bz

CVE-2026-53935

6.9 mediumEPSS 0.3%

Medium (6.9). EPSS 0.3% chance of exploitation in the next 30 days. Fixed in github.com/cilium/cilium 1.17.16, 1.18.10, 1.19.4.

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.

Severity

CVSS 3.1

6.9 medium
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:H
EPSS
0.3% chance of exploitation in the next 30 days; higher than 27% of CVEs (scores of 2026-10-31)
CWE
CWE-863
Published
Modified
Record from
the NVD, synced

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-q6h5-q3q6-f87xGogithub.com/cilium/cilium>=1.19.0 <1.19.41.19.4
GHSA-q6h5-q3q6-f87xGogithub.com/cilium/cilium>=1.18.2 <1.18.101.18.10
GHSA-q6h5-q3q6-f87xGogithub.com/cilium/cilium<1.17.161.17.16
GO-2026-5914Gogithub.com/cilium/cilium<1.17.16
>=1.18.2 <1.18.10
>=1.19.0 <1.19.4		1.17.16, 1.18.10, 1.19.4

References

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