Resource exhaustion in Traefik
CVE-2026-22045
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…
EPSS: 0.003 (23.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Traefik — versions < 2.11.35, >=3.0.0-beta1, < 3.6.7
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-22045?
- CVE-2026-22045 is a medium-severity vulnerability in Traefik, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.9/10. Published 2026-01-15.
- How severe is CVE-2026-22045?
- Medium severity. CVSS v3 base score is 5.9 out of 10.