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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
traefik traefik
Default version status: unaffected
0 to < 2.11.55affected2.11.55unaffected
pkg:golang/github.com/traefik/traefik/v2traefik traefik
Default version status: unaffected
3.0.0 to ≤ 3.7.10affected
pkg:golang/github.com/traefik/traefik/v3