CVE-2025-46346

Summary

CVE-2025-46346 is a stored cross-site scripting (XSS) vulnerability affecting YesWiki, a PHP-based wiki system. Before version 4.5.4, the application's comments feature was found to be susceptible to this issue. Malicious actors can inject and store JavaScript payloads in comments, which are later executed in the browsers of unsuspecting users. The root cause is the application's failure to properly sanitize or encode user input. Despite filtering out `<script>` tags, the system does not account for obfuscated JavaScript payloads hidden in block comments like `/* JavaScriptPayload */`. The vulnerability has been addressed in version 4.5.4.

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