Cilium: Sensitive information disclosure and cluster disruption via local Envoy admin socket access

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Summary

CVECVE-2026-49445
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-15 20:17:10 UTC
Updated2026-07-16 16:19:10 UTC
DescriptionCilium is a networking, observability, and security solution. Prior to 1.17.14, 1.18.8, and 1.19.2, when Cilium L7 functionality is enabled, the embedded or standalone Envoy instance creates a world-accessible admin.sock on cluster nodes, allowing a local attacker to access Envoy admin endpoints, expose TLS secrets, disrupt cluster traffic, or terminate Envoy. This issue is fixed in versions 1.17.14, 1.18.8, and 1.19.2.

Risk And Classification

Primary CVSS: v3.1 9.2 CRITICAL from [email protected]

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

Problem Types: CWE-732 | CWE-732 CWE-732: Incorrect Permission Assignment for Critical Resource

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.2CRITICALCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H
3.1CNADECLARED9.2CRITICALCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Cilium Cilium affected < 1.17.14 Not specified
CNA Cilium Cilium affected >= 1.18.0, < 1.18.8 Not specified
CNA Cilium Cilium affected >= 1.19.0, < 1.19.2 Not specified

References

ReferenceSourceLinkTags
github.com/cilium/cilium/releases/tag/v1.17.14 [email protected] github.com
github.com/cilium/cilium/releases/tag/v1.18.8 [email protected] github.com
github.com/cilium/cilium/commit/7bfbdd5c1be83d6c9ba3e089b4c804b6603505b6 [email protected] github.com
github.com/cilium/cilium/releases/tag/v1.19.2 [email protected] github.com
github.com/cilium/cilium/pull/44512 [email protected] github.com
github.com/cilium/cilium/security/advisories/GHSA-3fcv-jvfp-m4q9 [email protected] github.com
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