PT-2026-85495 · Traefik · Traefik
CVSS v4.0
9.3
Critical
| Vector | AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Name of the Vulnerable Software and Affected Versions
Traefik versions prior to 2.11.55
Description
An authentication bypass exists in the
digestAuth middleware. The issue occurs because unknown usernames are assigned an empty secret instead of being rejected. This allows an attacker to calculate a valid digest response using the empty secret and arbitrary credentials, granting unauthorized access to any route protected by the digestAuth middleware without requiring a valid username or password.Recommendations
Update to version 2.11.55 or later.
Exploit
Fix
Improper Authentication
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Weakness Enumeration
Related Identifiers
Affected Products
Traefik