{"id":"CVE-2026-2721","details":"The MailArchiver plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 4.4.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.","modified":"2026-04-02T13:20:08.557995Z","published":"2026-03-07T02:16:12.963Z","references":[{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/mailarchiver/tags/4.4.0/includes/system/class-form.php#L55"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/mailarchiver/tags/4.4.0/includes/system/class-form.php#L92"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/mailarchiver/trunk/includes/system/class-form.php#L92"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3465101%40mailarchiver&new=3465101%40mailarchiver&sfp_email=&sfph_mail="},{"type":"WEB","url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/df2674c9-da77-412c-a812-f1749f54d04b?source=cve"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/mailarchiver/tags/4.4.0/includes/system/class-form.php#L126"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/mailarchiver/tags/4.4.0/includes/system/class-form.php#L156"},{"type":"FIX","url":"https://github.com/Pierre-Lannoy/wp-mailarchiver/commit/946c1a700bbecc6080a427fd428de800334af824"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pierre-lannoy/wp-mailarchiver","events":[{"introduced":"0"},{"fixed":"946c1a700bbecc6080a427fd428de800334af824"}]}],"versions":["1.0.0","1.0.0.-rc1","1.1.0","1.2.0","1.3.0","1.4.0","1.5.0","1.5.1","1.5.2","1.6.0","2.0.0","2.1.0","2.10.0","2.10.1","2.11.0","2.12.0","2.13.0","2.14.0","2.2.0","2.3.0","2.3.1","2.4.0","2.5.0","2.6.0","2.7.0","2.7.1","2.8.0","2.9.0","3.0.0","3.0.2","4.0.0","4.1.0","4.2.0","4.3.0","4.4.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-2721.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"}]}