Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.35 and 3.6.7, there is a potential vulnerability in Traefik ACME TLS certificates' automatic generation: the ACME TLS-ALPN fast path can allow unauthenticated clients to tie up go routines and file descriptors indefinitely when the ACME TLS challenge is enabled. A malicious client can open many connections, send a minimal ClientHello with acme-tls/1, then stop responding, leading to denial of service of the entry point. The vulnerability is fixed in 2.11.35 and 3.6.7.
References
| Link | Resource |
|---|---|
| https://github.com/traefik/traefik/commit/e9f3089e9045812bcf1b410a9d40568917b26c3d | Patch |
| https://github.com/traefik/traefik/releases/tag/v2.11.35 | Release Notes |
| https://github.com/traefik/traefik/releases/tag/v3.6.7 | Release Notes |
| https://github.com/traefik/traefik/security/advisories/GHSA-cwjm-3f7h-9hwq | Patch Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
23 Jan 2026, 19:29
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:* | |
| First Time |
Traefik
Traefik traefik |
|
| References | () https://github.com/traefik/traefik/commit/e9f3089e9045812bcf1b410a9d40568917b26c3d - Patch | |
| References | () https://github.com/traefik/traefik/releases/tag/v2.11.35 - Release Notes | |
| References | () https://github.com/traefik/traefik/releases/tag/v3.6.7 - Release Notes | |
| References | () https://github.com/traefik/traefik/security/advisories/GHSA-cwjm-3f7h-9hwq - Patch, Vendor Advisory |
15 Jan 2026, 23:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-01-15 23:15
Updated : 2026-01-23 19:29
NVD link : CVE-2026-22045
Mitre link : CVE-2026-22045
CVE.ORG link : CVE-2026-22045
JSON object : View
Products Affected
traefik
- traefik
CWE
CWE-770
Allocation of Resources Without Limits or Throttling