CVE-2026-85597 | BDVDB-2026-368359 Detail

Description#

Traefik before v2.11.55 and v3.0.0 through v3.7.10 contain a TLS option conflict resolution vulnerability that allows unauthenticated attackers to bypass client-certificate authentication by creating conflicting TLS options on multi-host routers. Attackers can reach protected backends by exploiting shared TLS resolution across multiple hostnames in a single router rule, causing the strict mTLS requirement to fall back to default options for all hosts.

Impact#

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Exploit#

History#

1. Version 12026-09-04Record published in the CVE List.
2. Version 22026-10-08Most recent update recorded in the CVE List.