CVE-2026-56742
MEDIUM5.9CVSS v3
—CVSS v2
0.17%
EPSS (exploit probability)
CWE-862CWE
Description
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.
CVSS v3 vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L
Affected routers (0)
No routers currently mapped to this CVE in our database.