---
title: "CVE-2026-49445: Cilium vulnerable to sensitive information disclosure and cluster disruption via local Envoy admin socket access"
url: https://erroneo.us/security/cve/CVE-2026-49445/
description: "CVE-2026-49445 (github.com/cilium/cilium (Go)): Cilium is a networking, observability, and security solution. Prior to 1.17.14, 1.18.8, and 1.19.2, when…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-07-15
date_modified: 2026-07-16
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-49445"
kev: false
cvss: 9.2
epss: 0.00166
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-49445: Cilium vulnerable to sensitive information disclosure and cluster disruption via local Envoy admin socket access

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.2% , percentile 5: FIRST’s model estimates a 0.2% chance of exploitation activity in the next 30 days, higher than 5% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Needs local access needed. Lower urgency for most teams unless an attacker could already run code on the machine.
- Only applies if your dependency tree includes github.com/cilium/cilium (Go) >= 1.19.0, < 1.19.2, fixed in 1.19.2 ; github.com/cilium/cilium (Go) >= 1.18.0, < 1.18.8, fixed in 1.18.8 ; github.com/cilium/cilium (Go) < 1.17.14, fixed in 1.17.14 . Check your lockfile, including transitive dependencies.

## What it is

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 packages

- Go `github.com/cilium/cilium` >= 1.19.0, < 1.19.2 → fixed: 1.19.2
- Go `github.com/cilium/cilium` >= 1.18.0, < 1.18.8 → fixed: 1.18.8
- Go `github.com/cilium/cilium` < 1.17.14 → fixed: 1.17.14

## Affected products (CVE record)

- cilium cilium: < 1.17.14, >= 1.18.0, < 1.18.8, >= 1.19.0, < 1.19.2

## Severity

- GitHub_M CVSS 3.1: 9.2 `CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H`
- GitHub CVSS 3.1: 9.2 `CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable no , technical impact partial .
- FIRST EPSS (model of 2026-10-21): 0.17% probability of exploitation activity in the next 30 days; percentile 5.

## Sources

- [GitHub Advisory GHSA-3fcv-jvfp-m4q9](https://github.com/advisories/GHSA-3fcv-jvfp-m4q9)
- [CVE.org record CVE-2026-49445](https://www.cve.org/CVERecord?id=CVE-2026-49445)
- [NVD entry CVE-2026-49445](https://nvd.nist.gov/vuln/detail/CVE-2026-49445)
- [github.com](https://github.com/cilium/cilium/security/advisories/GHSA-3fcv-jvfp-m4q9)
- [github.com](https://github.com/cilium/cilium/pull/44512)
- [github.com](https://github.com/cilium/cilium/commit/7bfbdd5c1be83d6c9ba3e089b4c804b6603505b6)
- [github.com](https://github.com/cilium/cilium/releases/tag/v1.17.14)
- [github.com](https://github.com/cilium/cilium/releases/tag/v1.18.8)
- [github.com](https://github.com/cilium/cilium/releases/tag/v1.19.2)

---
Source page: https://erroneo.us/security/cve/CVE-2026-49445/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt