Threats Tagged 'ghsa-rhg6-2vjh-j5qc'
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Threats Tagged 'ghsa-rhg6-2vjh-j5qc'
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V2: Duplicate Advisory: Traefik: Authentication Bypass via Path Traversal in ReplacePathRegex Middleware 0 ## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-cxjq-mrr5-89rv. This link is maintained to preserve external references. ## Original Description Traefik versions <= v2.11.51, >= v3.6.0 <= v3.6.22, and >= v3.7.0 <= v3.7.6 contain an authentication bypass via path traversal in the ReplacePathRegex middleware. When ReplacePathRegex is configured with a regex that captures user-controlled path segments without a mandatory path separator (e.g. regex "^/api(.*)", replacement "/$1"), the middleware forwards the replaced path to the backend without validating that it matches its normalized form. An unauthenticated remote attacker can send a crafted request (e.g. GET /api../admin) that produces an un-normalized path such as /../admin, which a backend that normalizes paths resolves to a protected route, bypassing authentication middleware. Fixed in v2.11.52, v3.6.23, and v3.7.7. Join the discussion | GCVE Database | 07/22/2026, 12:32:18 UTC Added: 08/06/2026, 18:16:02 UTC |
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