CVE-2026-53935Cilium is a networking, observability, and security solution.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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
- 6.9 MEDIUM (v3.1, NVD)CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:H
- Weakness (CWE)
- CWE-863
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Deferred
- Record last updated
- Jul 10, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
No affected products are listed yet.
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
- https://github.com/cilium/cilium/pull/45585
- https://github.com/cilium/cilium/security/advisories/GHSA-q6h5-q3q6-f87x
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.