CVE-2026-26963

6.1 MEDIUM
Published: February 20, 2026 Modified: February 20, 2026
View on 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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/cilium/cilium/pull/42892
Source: security-advisories@github.com
Issue Tracking
https://github.com/cilium/cilium/releases/tag/v1.18.6
Source: security-advisories@github.com
Release Notes
https://github.com/cilium/cilium/security/advisories/GHSA-5r23-prx4-mqg3
Source: security-advisories@github.com
Patch Vendor Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.1 / 10.0
EPSS (Exploit Probability)
0.0%
1th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

cilium