Traefik is an HTTP reverse proxy and load balancer. In affected versions sending a GET request to any Traefik endpoint with the "Content-length" request header results in an indefinite hang with the default configuration. This vulnerability can be exploited by attackers to induce a denial of service. This vulnerability has been addressed in version 2.11.2 and 3.0.0-rc5. Users are advised to upgrade. For affected versions, this vulnerability can be mitigated by configuring the readTimeout option.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| github.com/traefik/traefik/v3(Go) | 3.0.0-beta3 | 3.0.0-rc5 | N/A |
| github.com/traefik/traefik/v2(Go) | 0 | 2.11.2 | N/A |
| github.com/traefik/traefik(Go) | 0 | 2.11.2 | N/A |
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