Description
XWiki Platform is a generic wiki platform. Starting in versions 6.3-rc-1 and 6.2.4, it's possible to inject arbitrary wiki syntax including Groovy, Python and Velocity script macros via the `newThemeName` request parameter (URL parameter), in combination with additional parameters. This has been patched in the supported versions 13.10.10, 14.9-rc-1, and 14.4.6. As a workaround, it is possible to edit `FlamingoThemesCode.WebHomeSheet` and manually perform the changes from the patch fixing the issue.
Remediation
References
https://github.com/xwiki/xwiki-platform/commit/ea2e615f50a918802fd60b09ec87aa04bc6ea8e2#diff-e2153fa59f9d92ef67b0afbf27984bd17170921a3b558fac227160003d0dfd2aR283-R284
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-x2qm-r4wx-8gpg
https://jira.xwiki.org/browse/XWIKI-19757
Related Vulnerabilities
CVE-2023-46131 Vulnerability in maven package org.grails:grails-encoder
CVE-2014-7810 Vulnerability in maven package org.apache.tomcat:tomcat-jasper
CVE-2022-48285 Vulnerability in npm package jszip
CVE-2023-37910 Vulnerability in maven package org.xwiki.platform:xwiki-platform-attachment-api
CVE-2016-5018 Vulnerability in maven package org.apache.tomcat:tomcat-jasper