CVE-2026-56743mediumCWE-863

CVE-2026-56743: falha de média gravidade em cilium

Cilium may unexpectedly allow ingress traffic from the local namespace when a Kubernetes NetworkPolicy is configured with an ipBlock match

Publicada em · Atualizada em

Seguir esta CVE+ Monitorar cilium+ Monitorar github.com/cilium/cilium

Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.

13Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 5.4epss 0.2%
Cilium is a networking, observability, and security solution. From 1.19.0 to 1.19.4, standard Kubernetes NetworkPolicy specifications using CIDR-based ipBlock rules without pod or namespace selectors erroneously generate a wildcard namespace allow rule when Cilium is configured with a custom clusterName rather than the default any value. The parser incorrectly instantiates a pod selector on selectorless peer definitions, allowing traffic from other workloads in the same namespace as the subject of the policy. This issue is fixed in version 1.19.5.
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Produtos afetados
cilium · cilium
CVEs relacionadas — cilium

No mesmo produto, das mais perigosas para as menos.

CVE-2023-27595MEDIUMCilium eBPF filters may be temporarily removed during agent restartEPSS 0.7%CVE-2023-30851LOWPotential HTTP policy bypass when using header rules in CiliumEPSS 0.7%CVE-2024-28248HIGHCilium intermittent HTTP policy bypassEPSS 0.6%CVE-2024-42486MEDIUMCilium vulnerable to information leakage via incorrect ReferenceGrant update logic in Gateway APIEPSS 0.6%CVE-2023-39347HIGHCilium NetworkPolicy bypass via pod labelsEPSS 0.6%CVE-2023-27594MEDIUMCilium vulnerable to potential network policy bypass when routing IPv6 traffic EPSS 0.6%