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TI-2026-36600 Aliases CVE-2026-49445GHSA-3fcv-jvfp-m4q9

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

Priority LOW 39CWE-732Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · Low · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-862.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00166 5th percentileScored 2026-11-07
Fix Fixed cilium (cilium): 1.17.14, 1.18.8, 1.19.2github.com/cilium/cilium (Go): 1.19.2, 1.18.8, 1.17.14

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ciliumciliumbefore 1.17.14; 1.18.0 to before 1.18.8; 1.19.0 to before 1.19.21.17.14, 1.18.8, 1.19.2Patch availableCNA
—github.com/cilium/cilium (Go)1.19.0 to before 1.19.21.19.2Patch availableGHSA-3fcv-jvfp-m4q9
—github.com/cilium/cilium (Go)1.18.0 to before 1.18.81.18.8Patch availableGHSA-3fcv-jvfp-m4q9
—github.com/cilium/cilium (Go)before 1.17.141.17.14Patch availableGHSA-3fcv-jvfp-m4q9
  • cilium Vendorcilium Affected before 1.17.14; 1.18.0 to before 1.18.8; 1.19.0 to before 1.19.2 Fixed in 1.17.14, 1.18.8, 1.19.2 Patch available CNA
  • github.com/cilium/cilium (Go) Vendor— Affected 1.19.0 to before 1.19.2 Fixed in 1.19.2 Patch available GHSA-3fcv-jvfp-m4q9
  • github.com/cilium/cilium (Go) Vendor— Affected 1.18.0 to before 1.18.8 Fixed in 1.18.8 Patch available GHSA-3fcv-jvfp-m4q9
  • github.com/cilium/cilium (Go) Vendor— Affected before 1.17.14 Fixed in 1.17.14 Patch available GHSA-3fcv-jvfp-m4q9

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*before 1.17.14; 1.18.0 to before 1.18.8; 1.19.0 to before 1.19.2Vulnerablecilium
  • cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* Versions before 1.17.14; 1.18.0 to before 1.18.8; 1.19.0 to before 1.19.2 Vulnerable ·cilium

Remediation

  • Fix · CNA cilium (cilium) Fixed in 1.17.14, 1.18.8, 1.19.2
  • Fix · GHSA-3fcv-jvfp-m4q9 github.com/cilium/cilium (Go) Fixed in 1.19.2 Advisory →
  • Fix · GHSA-3fcv-jvfp-m4q9 github.com/cilium/cilium (Go) Fixed in 1.18.8 Advisory →
  • Fix · GHSA-3fcv-jvfp-m4q9 github.com/cilium/cilium (Go) Fixed in 1.17.14 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-49445
  2. 2026-10-03 Alias added: GHSA-3fcv-jvfp-m4q9

References

Patch 3

Other 4

  • TI-2024-32092 CIDR deny policies may not take effect when a more narrow CIDR allow is present CVSS 3.1HIGH 8.7
  • TI-2023-12305 Cilium eBPF filters may be temporarily removed during agent restart CVSS 3.1CRITICAL 9.8
  • TI-2023-20486 Cilium NetworkPolicy bypass via pod labels CVSS 3.1CRITICAL 9.0
  • TI-2022-11721 Incorrect Default Permissions in Cilium CVSS 3.1HIGH 8.8
  • TI-2026-40915 Cilium: Namespaced HTTPRoutes can redirect traffic to other namespaces CVSS 3.1HIGH 8.9
  • TI-2022-11722 Improper Privilege Management in Cilium CVSS 3.1HIGH 8.2
See all 34 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences