CVE-2024-21641 PoC — Flarum's Logout Route allows open redirects

Source

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-21641.yaml

Associated Vulnerability

Title:Flarum's Logout Route allows open redirects (CVE-2024-21641)
Description:Flarum is open source discussion platform software. Prior to version 1.8.5, the Flarum `/logout` route includes a redirect parameter that allows any third party to redirect users from a (trusted) domain of the Flarum installation to redirect to any link. For logged-in users, the logout must be confirmed. Guests are immediately redirected. This could be used by spammers to redirect to a web address using a trusted domain of a running Flarum installation. The vulnerability has been fixed and published as flarum/core v1.8.5. As a workaround, some extensions modifying the logout route can remedy this issue if their implementation is safe.

Description

Flarum is open source discussion platform software. Prior to version 1.8.5, the Flarum `/logout` route includes a redirect parameter that allows any third party to redirect users from a (trusted) domain of the Flarum installation to redirect to any link. For logged-in users, the logout must be confirmed. Guests are immediately redirected. This could be used by spammers to redirect to a web address using a trusted domain of a running Flarum installation.

File Snapshot


 id: CVE-2024-21641

info:
  name: Flarum < 1.8.5 - Open Redirect
  author: kking
  severity: medium


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