Open Redirect Affecting package, versions <1.7.26 >2.2.0 <2.2.8 >2.3.0-rc0 <2.3.0-rc3

  • Attack Complexity


  • User Interaction


  • Confidentiality


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  • snyk-id


  • published

    31 Jul 2020

  • disclosed

    31 Jul 2020

  • credit


How to fix?

Upgrade to version 1.7.26, 2.2.8, 2.3.0-rc3 or higher.

Overview is a modern HTTP reverse proxy and load balancer that makes deploying microservices easy.

Affected versions of this package are vulnerable to Open Redirect. There exists a potential open redirect vulnerability in Traefik's handling of the X-Forwarded-Prefix header. The Traefik API dashboard component doesn't validate that the value of the header X-Forwarded-Prefix is a site relative path and will redirect to any header provided URI. Successful exploitation of an open redirect can be used to entice victims to disclose sensitive information. Active Exploitation of this issue is unlikely as it would require active header injection, however, the Traefik team addressed this issue nonetheless to prevent abuse in e.g. cache poisoning scenarios.