XWiki makes title of inaccessible pages available through the class property values REST API

Summary

XWiki is a generic wiki platform. In XWiki Platform versions 10.9 through 16.4.6, 16.5.0-rc-1 through 16.10.2, and 17.0.0-rc-1, the title of every single page whose reference is known can be accessed through the REST API as long as an XClass with a page property is accessible, this is the default for an XWiki installation. This allows an attacker to get titles of pages whose reference is known, one title per request. This doesn't affect fully private wikis as the REST endpoint checks access rights on the XClass definition. The impact on confidentiality depends on the strategy for page names. By default, page names match the title, so the impact should be low but if page names are intentionally obfuscated because the titles are sensitive, the impact could be high. This has been fixed in XWiki 16.4.7, 16.10.3 and 17.0.0 by adding access control checks before getting the title of any page.

Timeline

1. Jun 13, 2025, 5:21 PM UTCCVE published
2. Jun 13, 2025, 6:19 PM UTCCISA SSVC assessment

   Exploitation: poc · Automatable: yes · Technical impact: partial

3. Jun 13, 2025, 6:20 PM UTCRecord last updated

Affected versions

• xwiki xwiki-platform

  From 10.9 · fixed in 16.4.7; From 16.5.0-rc-1 · fixed in 16.10.3; From 17.0.0-rc-1 · fixed in 17.0.0

• org.xwiki.platform:xwiki-platform-rest-serverMaven

  From 10.9 · fixed in 16.4.7

• org.xwiki.platform:xwiki-platform-rest-serverMaven

  From 16.5.0-rc-1 · fixed in 16.10.3

• org.xwiki.platform:xwiki-platform-rest-serverMaven

  From 17.0.0-rc-1 · fixed in 17.0.0

References 3