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CVE-2026-22045 PUBLISHED CVSS 5.900000095367432 MEDIUM

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.

EPSS 0.02% · 4.8th percentile

Risk Scores

CVSS v3.1
5.900000095367432
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.02%
4.8th percentile

Affected Products

VendorProductVersions
traefiktraefik< 2.11.35, >=3.0.0-beta1, < 3.6.7, 0
github.comtraefik/traefik/v20
github.comtraefik/traefik/v30

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