CVE-2023-45134

Summary

CVE-2023-45134 is a cross-site scripting (XSS) vulnerability affecting the XWiki Platform. This issue lies in the `org.xwiki.platform:xwiki-platform-web`, `org.xwiki.platform:xwiki-platform-web-templates`, and `org.xwiki.platform:xwiki-web-standard` modules. It allows attackers to create a template provider on any document, including their user profile, containing malicious code. When a user selects this template during document creation, the attacker's code is executed, potentially granting arbitrary actions with the user's rights. Depending on the user's privileges, this may result in remote code execution and full access to the XWiki installation. This vulnerability has been addressed in versions `13.4-rc-1`, `14.10.2`, and `15.5-rc-1` of the first two modules, as well as in version `3.1-milestone-1` of the third module, through the addition of appropriate escaping. The vulnerable template file, createinline.vm, can be patched manually.

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