Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. There is a vulnerability in Traefik that allows the client to provide the X-Forwarded-Prefix header from an untrusted source. This issue has been addressed in versions 2.11.14 and 3.2.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.
https://github.com/traefik/traefik/security/advisories/GHSA-h924-8g65-j9wg
https://github.com/traefik/traefik/releases/tag/v3.2.1