CVE-2026-41520

medium

Description

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.17.15, 1.18.9, and 1.19.3, the output of cilium-bugtool can contain sensitive data when the tool is run against Cilium deployments with WireGuard encryption enabled. This issue has been patched in versions 1.17.15, 1.18.9, and 1.19.3.

References

https://github.com/cilium/cilium/security/advisories/GHSA-gj49-89wh-h4gj

https://github.com/cilium/cilium/releases/tag/v1.19.3

https://github.com/cilium/cilium/releases/tag/v1.18.9

https://github.com/cilium/cilium/releases/tag/v1.17.15

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-28845

Details

Source: Mitre, NVD

Published: 2026-05-08

Updated: 2026-05-18

Named Vulnerability: GO-2026-5400Named Vulnerability: GHSA-gj49-89wh-h4gj

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:L/AC:L/Au:M/C:C/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 4.4

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Severity: Medium

EPSS

EPSS: 0.00077