VULNERABILITY INTELLIGENCE

CVE-2026-85595

CVSS score9.8 CRITICAL
EPSS probability2.45%
CISA KEVNot currently listed
Published2026-09-04
Last modified2026-10-08
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

Traefik versions before v2.11.55 and versions v3.0.0 through v3.7.10 contain an authentication bypass vulnerability in the digestAuth middleware where unknown usernames receive an empty secret instead of rejection. Attackers can compute a valid digest response using the empty secret and arbitrary credentials to bypass authentication on any digestAuth-protected route without a valid username or password.

Weakness classification

  • disclosure@vulncheck.com: CWE-287

Primary references