CVE-2026-23734: XWiki XWiki-Commons

Critical severity, CVSS 9.3. EPSS: 19.6% chance of exploitation in the next 30 days.

XWiki Platform is a generic wiki platform. Versions prior to 18.1.0-rc-1, 17.10.3, 17.4.9, and 16.10.17 allow access to read configuration files by using URLs such as http://localhost:8080/bin/ssx/Main/WebHome?resource=/../../WEB-INF/xwiki.cfg&minify=false, leading to Path Traversal. The vulnerability is can be exploited via resources parameter the ssx and jsx endpoints by using leading slashes. This issue has been patched in 18.1.0-rc-1, 17.10.3, 17.4.9, 16.10.17.

Affected products

• XWiki XWiki-Commons: from 4.2-milestone-2, before 16.10.17 (fixed in 16.10.17); from 17.0.0-rc-1, before 17.4.9 (fixed in 17.4.9); from 17.5.0, before 17.10.3 (fixed in 17.10.3); from 18.0.0-rc-1, before 18.1.0-rc-1 (fixed in 18.1.0-rc-1)

Published 2026-05-20. Last modified 2026-07-23.