CVE-2026-56742 (GCVE-0-2026-56742)
Vulnerability from cvelistv5
Published
2026-07-15 19:14
Modified
2026-07-16 12:57
Severity ?
5.9 (Medium) - CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L
CWE
Summary
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.
References
Impacted products
Vendor Product Version
cilium cilium Version: < 1.17.17
Version: >= 1.18.0, < 1.18.11
Version: >= 1.19.0, < 1.19.5
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