Vulnerability Monitor

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CVE-2025-54411

Discourse is an open-source discussion platform. Welcome banner user name string for logged in users can be vulnerable to XSS attacks, which affect the user themselves or an admin impersonating them. Admins can temporarily alter the welcome_banner.header.logged_in_members site text to remove the preferred_display_name placeholder, or not impersonate any users for the time being. This vulnerability is fixed in 3.5.0.beta8.

Published

2025-08-19T17:15:40.833

Last Modified

2025-08-25T18:25:52.673

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 5.4 (MEDIUM)

Weaknesses
  • Type: Secondary
    CWE-79
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application discourse discourse < 3.5.0 Yes
Application discourse discourse 3.5.0 Yes
Application discourse discourse 3.5.0 Yes
Application discourse discourse 3.5.0 Yes
Application discourse discourse 3.5.0 Yes
Application discourse discourse 3.5.0 Yes
Application discourse discourse 3.5.0 Yes
Application discourse discourse 3.5.0 Yes
References