GHSA-3fcv-jvfp-m4q9: Cilium vulnerable to sensitive information disclosure and cluster disruption via local Envoy admin socket access
Cilium versions prior to 1.17.14, between 1.18.0 and 1.18.7 inclusive, and between 1.19.0 and 1.19.1 inclusive are vulnerable to sensitive information disclosure and cluster disruption via local access to the Envoy admin socket. When L7 functionality is enabled, Envoy creates a world-accessible socket on cluster nodes, allowing local attackers to access admin endpoints. This can expose TLS secrets, disrupt cluster traffic, or terminate the Envoy process. The vulnerability affects both embedded and standalone Envoy deployments. Patches are available in Cilium versions 1.17.14, 1.18.8, and 1.19.2. No known workarounds exist.
AI Analysis
Technical Summary
CVE-2026-49445 affects Cilium's Envoy instance when L7 functionality is enabled, creating a world-accessible admin socket on cluster nodes. Local attackers can exploit this to access Envoy admin endpoints, potentially exposing sensitive TLS secrets, disrupting cluster traffic, or terminating the Envoy process. The vulnerability impacts both embedded and standalone Envoy deployment models. Affected versions include all Cilium versions prior to 1.17.14, versions from 1.18.0 up to 1.18.7 inclusive, and versions from 1.19.0 up to 1.19.1 inclusive. The issue has been patched in versions 1.17.14, 1.18.8, and 1.19.2. No workarounds are known.
Potential Impact
The vulnerability allows a local attacker to access Envoy admin endpoints via a world-accessible socket, potentially leading to disclosure of sensitive TLS secrets, disruption of cluster traffic, and termination of the Envoy process. This can compromise confidentiality, integrity, and availability of the cluster's networking components.
Mitigation Recommendations
This vulnerability has been officially fixed in Cilium versions 1.17.14, 1.18.8, and 1.19.2. Users should upgrade to these or later versions to remediate the issue. There are no known workarounds. It is recommended to apply the official patches promptly.
GHSA-3fcv-jvfp-m4q9: Cilium vulnerable to sensitive information disclosure and cluster disruption via local Envoy admin socket access
Description
Cilium versions prior to 1.17.14, between 1.18.0 and 1.18.7 inclusive, and between 1.19.0 and 1.19.1 inclusive are vulnerable to sensitive information disclosure and cluster disruption via local access to the Envoy admin socket. When L7 functionality is enabled, Envoy creates a world-accessible socket on cluster nodes, allowing local attackers to access admin endpoints. This can expose TLS secrets, disrupt cluster traffic, or terminate the Envoy process. The vulnerability affects both embedded and standalone Envoy deployments. Patches are available in Cilium versions 1.17.14, 1.18.8, and 1.19.2. No known workarounds exist.
CVSS v3.1
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-49445 affects Cilium's Envoy instance when L7 functionality is enabled, creating a world-accessible admin socket on cluster nodes. Local attackers can exploit this to access Envoy admin endpoints, potentially exposing sensitive TLS secrets, disrupting cluster traffic, or terminating the Envoy process. The vulnerability impacts both embedded and standalone Envoy deployment models. Affected versions include all Cilium versions prior to 1.17.14, versions from 1.18.0 up to 1.18.7 inclusive, and versions from 1.19.0 up to 1.19.1 inclusive. The issue has been patched in versions 1.17.14, 1.18.8, and 1.19.2. No workarounds are known.
Potential Impact
The vulnerability allows a local attacker to access Envoy admin endpoints via a world-accessible socket, potentially leading to disclosure of sensitive TLS secrets, disruption of cluster traffic, and termination of the Envoy process. This can compromise confidentiality, integrity, and availability of the cluster's networking components.
Mitigation Recommendations
This vulnerability has been officially fixed in Cilium versions 1.17.14, 1.18.8, and 1.19.2. Users should upgrade to these or later versions to remediate the issue. There are no known workarounds. It is recommended to apply the official patches promptly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-3fcv-jvfp-m4q9
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-49445"]
- Ecosystems
- ["Go"]
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
Threat ID: 6a4c345527e9c797195fe1ca
Added to database: 07/06/2026, 23:03:49 UTC
Last enriched: 07/06/2026, 23:29:43 UTC
Last updated: 07/06/2026, 23:29:43 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.