Privilege escalation from view right on XWiki.Notifications.Code.LegacyNotificationAdministration in xwiki-platform

Summary

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Affected versions of xwiki are subject to code injection in the `since` parameter of the `/xwiki/bin/view/XWiki/Notifications/Code/LegacyNotificationAdministration` endpoint. This provides an XWiki syntax injection attack via the since-parameter, allowing privilege escalation from view to programming rights and subsequent code execution privilege. The vulnerability has been patched in XWiki 15.0-rc-1, 14.10.3, 14.4.8 and 14.10.3. Users are advised to upgrade. Users unable to upgrade may modify the page `XWiki.Notifications.Code.LegacyNotificationAdministration` to add the missing escaping. For versions < 14.6-rc-1 a workaround is to modify the file `<xwikiwebapp>/templates/distribution/eventmigration.wiki` to add the missing escaping.

Timeline

1. Apr 18, 2023, 11:01 PM UTCCVE published
2. Feb 5, 2025, 7:04 PM UTCCISA SSVC assessment

   Exploitation: poc · Automatable: no · Technical impact: total

3. Feb 5, 2025, 7:04 PM UTCRecord last updated
4. Oct 28, 2026EPSS reached 10%

   FIRST estimates at least a 10% chance of exploitation in the next 30 days

Affected versions

• xwiki xwiki-platform

  fixed in 14.4.8; From 14.5.0 · fixed in 14.10.3.

• org.xwiki.platform:xwiki-platform-distribution-warMaven

  From 12.6.1 · fixed in 13.10.11

• org.xwiki.platform:xwiki-platform-distribution-warMaven

  From 14.0-rc-1 · fixed in 14.4.8

• org.xwiki.platform:xwiki-platform-distribution-warMaven

  From 14.5 · fixed in 14.6-rc-1

• org.xwiki.platform:xwiki-platform-legacy-events-hibernate-uiMaven

  From 14.6-rc-1 · fixed in 14.10.3

References 4