by Kastro
Paper/Archive/CVE-2026-49445

CVE-2026-49445

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

EPSS 0.2%CVSS 9.2
critical.is priorityof 100
29
CVSS 9.2 (CNA)9.2 / 10 × 3027.6Not in CISA KEV+300.0EPSS percentile 5.8.058 × 201.2No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Cilium 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.

Affected

ProductAffectedFixed inSource
cilium< 1.17.14–CNA
cilium>= 1.18.0, < 1.18.8–CNA
cilium>= 1.19.0, < 1.19.2–CNA

Scores by source

GitHub_M (CNA)9.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refgithub.com/cilium/cilium/security/advisories/GHSA-3fcv-jvfp-m4q9refgithub.com/cilium/cilium/pull/44512refgithub.com/cilium/cilium/commit/7bfbdd5c1be83d6c9ba3e089b4c804b6603505b6refgithub.com/cilium/cilium/releases/tag/v1.17.14refgithub.com/cilium/cilium/releases/tag/v1.18.8refgithub.com/cilium/cilium/releases/tag/v1.19.2