CVE-2026-26963
unknown
CVSS v3
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CVSS v4 NEW
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VIR risk
—
Description
Cilium may not enforce host firewall policies when Native Routing, WireGuard and Node Encryption are enabled in github.com/cilium/cilium
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/cilium/cilium | >=1.18.0,<1.18.6 | 1.18.6 |
References
- https://github.com/cilium/cilium/security/advisories/GHSA-5r23-prx4-mqg3
- https://nvd.nist.gov/vuln/detail/CVE-2026-26963
- https://github.com/cilium/cilium/pull/42892
- https://github.com/cilium/cilium/commit/88e28e1e62c0b1a02c3f0fc22d888ac9eefbe885
- https://github.com/cilium/cilium
- https://github.com/cilium/cilium/releases/tag/v1.18.6
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.