Incorrect permission assignment for critical resource in Cilium - CVE-2026-49445
Published: November 9, 2026
Vulnerability identifier: #VU162613
CSH Severity: Low
CVSS v4: 7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-49445
CWE-ID: CWE-732
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an unprivileged local attacker to expose sensitive information or disrupt cluster traffic in Cilium.
The vulnerability exists due to a world-accessible Envoy administration socket created on cluster nodes when Cilium L7 functionality is enabled. An unprivileged local attacker can access administrative endpoints through this socket to retrieve TLS secrets or terminate Envoy, depending on the deployment configuration.
Affected software
Cilium
How to mitigate CVE-2026-49445
Install security update from vendor's website.
Cilium - addressed in versions 1.17.14, 1.18.8, 1.19.2