CVE-2026-85595 — Traefik before v2.11.55 and v3.0.0 through v3.7.10 Authentication Bypass via digestAuth
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 …
Published: 2026-09-04 · CVSS: 9.3 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7