Back
CVE-2026-41520
Cillium exposes sensitive information included in the cilium-bugtool debug archive
High7.9EPSS 0.08%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High7.9 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N |
| NVDNVD · Analyzed | 3.1 | Medium4.4 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.08% · top 100% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.9.
Weakness
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/cilium/ciliumGHSA-gj49-89wh-h4gj (opens in a new tab)
References (4)
- https://github.com/cilium/cilium/security/advisories/GHSA-gj49-89wh-h4gj (opens in a new tab)x_refsource_CONFIRM
- https://github.com/cilium/cilium/releases/tag/v1.17.15 (opens in a new tab)x_refsource_MISC
- https://github.com/cilium/cilium/releases/tag/v1.18.9 (opens in a new tab)x_refsource_MISC
- https://github.com/cilium/cilium/releases/tag/v1.19.3 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-gj49-89wh-h4gj (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-41520)Record last updated .