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VID 210278
Severity 40
Port 80, ...
Protocol TCP
Class CGI
Detailed Description WordPress Core is vulnerable to Stored Cross-Site Scripting via user display names in the Avatar block in various versions up to 6.5.2 due to insufficient output escaping on the display name. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. In addition, it also makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that have the comment block present and display the comment author's avatar.

* References:
https://www.wordfence.com/threat-intel/vulnerabilities/id/e363c09a-4381-4b3a-951c-9a0ff5669016?source=cve
https://core.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=57950%40%2F&new=57950%40%2F&sfp_email=&sfph_mail=#file3
https://wordpress.org/news/2024/04/wordpress-6-5-2-maintenance-and-security-release/
https://www.wordfence.com/blog/2024/04/unauthenticated-stored-cross-site-scripting-vulnerability-patched-in-wordpress-core/
https://core.trac.wordpress.org/changeset/57951/branches/6.4/src/wp-includes/blocks/avatar.php

* Platforms Affected:
WordPress prior equal to 6.5.2
Any operating system Any version
Recommendation Upgrade to the version (6.5.2 or later) fixed this vulnerability, available from the WordPress Download Web page at http://wordpress.org/download/
Related URL CVE-2024-4439 (CVE)
Related URL (SecurityFocus)
Related URL (ISS)