CVE-2026-53966

High

Description

XWiki Platform is a generic wiki platform. From 13.4-rc-1 until 16.10.17, 17.4.10, 17.10.4, and 18.1.0-rc-1, the Live Data edit REST API allows a user who can edit a page to change that page's rights without executing the normal document-saving authorization checks. The user can grant script right and then execute potentially dangerous Velocity scripts or send unfiltered HTML and JavaScript to clients. The same missing checks can circumvent extension security controls implemented as listeners for UserUpdatingDocumentEvent and related user document events. This issue is fixed in versions 16.10.17, 17.4.10, 17.10.4, and 18.1.0-rc-1.

SeverityHigh
CVSS7.1
Exploit probability—
ProductOrg.xwiki.platform:xwiki-platform-livedata-livetable
PublishedSep 15, 2026
First seenSep 15, 2026

How to fix

Update
  • org.xwiki.platform:xwiki-platform-livedata-livetable16.10.17, 17.4.10, 17.10.4, 18.1.0-rc-1 or later

Affected products

ProductAffected versionsFixed in
org.xwiki.platform:xwiki-platform-livedata-livetableMaven13.4-rc-1 ≤ v < 16.10.17, 17.0.0-rc-1 ≤ v < 17.4.10, 17.5.0-rc-1 ≤ v < 17.10.4, 18.0.0-rc-1 ≤ v < 18.1.0-rc-116.10.17, 17.4.10, 17.10.4, 18.1.0-rc-1

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.