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CVE-2026-22045

MEDIUM

5.9

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung5.9

SchweregradMEDIUM

CVSS VektorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

AngriffsvektorNETWORK

KomplexitatHIGH

Erforderliche PrivilegienNONE

BenutzerinteraktionNONE

Veroffentlicht1/15/2026

Zuletzt geandert1/23/2026

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

traefik:traefik

Schwachen (CWE)

CWE-770

Referenzen

https://github.com/traefik/traefik/commit/e9f3089e9045812bcf1b410a9d40568917b26c3d(security-advisories@github.com)

https://github.com/traefik/traefik/releases/tag/v2.11.35(security-advisories@github.com)

https://github.com/traefik/traefik/releases/tag/v3.6.7(security-advisories@github.com)

https://github.com/traefik/traefik/security/advisories/GHSA-cwjm-3f7h-9hwq(security-advisories@github.com)

IOC Korrelationen

Keine Korrelationen erfasst

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