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CVE-2026-26963

nvd nist
Published: Feb 20, 2026Modified: Feb 20, 2026

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5.4
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Exploitability: 2.8 / Impact: 2.5
Source: NVD

Description

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Versions 1.18.0 through 1.18.5 will incorrectly permit traffic from Pods on other nodes when Native Routing, WireGuard and Node Encryption are enabled. This issue has been fixed in version 1.18.6.

Affected (1)

Products: Cilium: Cilium
Cilium
1 product
Cilium
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Cilium
From 1.18.0 to 1.18.6

Related CWEs

CWE-863
Incorrect Authorization
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

References (4)

Source: security-advisories@github.com
Patch
Source: security-advisories@github.com
Issue Tracking
Source: security-advisories@github.com
Release Notes
Source: security-advisories@github.com
PatchVendor Advisory

Timeline

No history available yet.