CVE-2026-32595

CVE-2026-32595 · Traefik: BasicAuth Middleware Timing Attack Allows Username Enumeration

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Traefik is an HTTP reverse proxy and load balancer. Versions 2.11.40 and below, 3.0.0-beta1 through 3.6.11, and 3.7.0-ea.1 comtain BasicAuth middleware that allows username enumeration via a timing attack. When a submitted username exists, the middleware performs a bcrypt password comparison taking ~166ms. When the username does not exist, the response returns immediately in ~0.6ms. This ~298x timing difference is observable over the network and allows an unauthenticated attacker to reliably distinguish valid from invalid usernames. This issue is patched in versions 2.11.41, 3.6.11 and 3.7.0-ea.2.

CVSS 6.3 · Средний · EPSS 0,4%

Опубликовано

2026-03-20T10:08:41.636Z

Обновлено

2026-03-20T15:38:35.378Z

Стек: web

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