CVE-2026-33137
CriticalSummary
XWiki Platform versions from 15.10.6 to 18.1.0-rc-1, 17.10.3, 17.4.9, and 16.10.17 have a vulnerability that allows XAR import without authentication or authorization checks. This enables an unauthenticated attacker to create or update documents in the target wiki.
Risk Assessment
The lack of proper security in the API poses a risk of unauthorized access to wiki data, which can lead to loss of information integrity and potential attacks on other systems.
Recommendation
It is recommended to upgrade to XWiki versions 16.10.17, 17.4.9, 17.10.3, 18.0.1, or 18.1.0-rc-1 to mitigate this vulnerability.
Original NVD description (English source)
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. XWiki Platform is a generic wiki platform. In versions starting with 15.10.6 and prior to 18.1.0-rc-1, 17.10.3, 17.4.9, and 16.10.17, the POST /wikis/{wikiName} API executes a XAR import without performing any authentication or authorization checks, allowing an unauthenticated attacker to create or update documents in the target wiki. This vulnerability has been patched in XWiki 16.10.17, 17.4.9, 17.10.3, 18.0.1 and 18.1.0-rc-1.