CVE-2026-41520: cilium · Information Exposure
Affects ciliumSource GCVE Database
Not known to be exploited · CVSS 7.9 High · fixed in 1.19.3 : patch cilium soon.
Data as of 11 Nov 2026, 23:06 UTC
Thin evidence
One scorer or none| CNA (GitHub_M) | CVSS 3.1 | 7.9 |
|---|
- Patch
- Available – fixed in 1.19.3, 1.18.9, 1.17.15
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 8 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
What to do
Upgrade cilium to 1.19.3, 1.18.9 or 1.17.15.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| cilium cilium | Affected
| Fixed in
|
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.