XWiki Platform vulnerable to Cross-site Scripting through attachment filename in uploader

Summary

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. When uploading an attachment with a malicious filename, malicious JavaScript code could be executed. This requires a social engineering attack to get the victim into uploading a file with a malicious name. The malicious code is solely executed during the upload and affects only the user uploading the attachment. While this allows performing actions in the name of that user, it seems unlikely that a user wouldn't notice the malicious filename while uploading the attachment. This has been patched in XWiki 14.10.21, 15.5.5, 15.10.6 and 16.0.0.

Timeline

1. Jul 31, 2024, 3:15 PM UTCCVE published
2. Aug 1, 2024, 2:43 PM UTCCISA SSVC assessment

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

3. Aug 13, 2024, 1:37 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

  From 4.2-milestone-3 · fixed in 14.10.21; From 15.0-rc-1 · fixed in 15.5.5; From 15.6-rc-1 · fixed in 15.10.6; From 16.0.0-rc-1 · fixed in 16.0.0

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

  From 4.2-milestone-3 · fixed in 14.10.21

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

  From 15.0-rc-1 · fixed in 15.5.5

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

  From 15.6-rc-1 · fixed in 15.10.6

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

  From 16.0.0-rc-1 · fixed in 16.0.0

References 8