vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-41520

Cillium exposes sensitive information included in the cilium-bugtool debug archive

MEDIUM
4.4
CVSS Score
Published: May 8, 2026 at 10:01 PM UTC
Updated: June 17, 2026 at 10:46 AM UTC
1 product affected across 1 vendorCilium

Using cilium by cilium?

Get instant alerts when new vulnerabilities affect cilium - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM4.4
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Cilium· Cilium
95%
v < 1.17.15v < 1.18.9v < 1.19.31.18.0 ≤ v < 1.18.91.19.0 ≤ v < 1.19.3
Affected range stops below 1.17.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.18.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.19.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

x_refsource_CONFIRMMitigationVendor Advisory
Source: cverecord
https://github.com/cilium/cilium/security/advisories/GHSA-gj49-89wh-h4gj
x_refsource_MISCProductRelease Notes
Source: cverecord
https://github.com/cilium/cilium/releases/tag/v1.17.15
x_refsource_MISCProductRelease Notes
Source: cverecord
https://github.com/cilium/cilium/releases/tag/v1.18.9
x_refsource_MISCProductRelease Notes
Source: cverecord
https://github.com/cilium/cilium/releases/tag/v1.19.3

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.4MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-200CWE-312

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card