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Silverpeas 6.4.2 contains a stored cross-site scripting (XSS) vulnerability in the event management module. An authenticated user can upload a malicious SVG file as an event attachment, which, when viewed by an administrator, executes embedded JavaScript in the admin's session. This allows attackers to escalate privileges by creating a new administrator account. The vulnerability arises from insufficient sanitization of SVG files and weak CSRF protections.
Reserved 2025-04-22 | Published 2025-06-09 | Updated 2025-06-09 | Assigner mitregithub.com/Silverpeas/Silverpeas-Core/pull/1394
medium.com/...svg-injection-in-silverpeas-6-4-2-b5ab1d5b6955
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