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CVE-2026-56742

Cilium: Namespaced HTTPRoutes can redirect traffic to other namespaces PUBLISHED

Description (CNA)

Cilium is a networking, observability, and security solution. Prior to 1.17.17, 1.18.11, and 1.19.5, Cilium clusters using Gateway API allow users with permissions to create or update namespaced HTTPRoutes to mirror HTTP traffic to any Service in any namespace, bypassing the ReferenceGrant authorization mechanism. Gateway API functionality is disabled by default. This issue is fixed in versions 1.17.17, 1.18.11, and 1.19.5.

Affected (CNA)

Vendor / productVersions
cilium / ciliumaffected < 1.17.17; affected >= 1.18.0, < 1.18.11; affected >= 1.19.0, < 1.19.5

CWE

CWE-862

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.