CVE-2023-30851: Cilium

Medium severity, CVSS 5.3. EPSS: 0.7% chance of exploitation in the next 30 days.

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. This issue only impacts users who have a HTTP policy that applies to multiple `toEndpoints` AND have an allow-all rule in place that affects only one of those endpoints. In such cases, a wildcard rule will be appended to the set of HTTP rules, which could cause bypass of HTTP policies. This issue has been patched in Cilium 1.11.16, 1.12.9, and 1.13.2.

Affected products

• Cilium Cilium: before 1.11.16 (fixed in 1.11.16); from 1.12.0, before 1.12.9 (fixed in 1.12.9); from 1.13.0, before 1.13.2 (fixed in 1.13.2)

Published 2023-05-25. Last modified 2026-06-17.