VulnerabilityAnalyzed
CVE-2026-41520
Cilium is a networking, observability, and security solution with an eBPF-based dataplane.
MEDIUM 4.4EPSS 0.08%
Does this matter?
Lower severity and a low EPSS score (0.08%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.4 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.08% probability · 0th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200, CWE-312
- Affected
- cilium/cilium
- Source
- security-advisories@github.com
References
- https://github.com/cilium/cilium/releases/tag/v1.17.15Product, Release Notes
- https://github.com/cilium/cilium/releases/tag/v1.18.9Product, Release Notes
- https://github.com/cilium/cilium/releases/tag/v1.19.3Product, Release Notes
- https://github.com/cilium/cilium/security/advisories/GHSA-gj49-89wh-h4gjMitigation, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.