CVE-2026-2721

Description

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.

PUBLISHED Reserved 2026-02-18 | Published 2026-03-07 | Updated 2026-03-07 | Assigner Wordfence

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Timeline

Credits

Ronnachai Chaipha finder

References

www.wordfence.com/...-da77-412c-a812-f1749f54d04b?source=cve

plugins.trac.wordpress.org/...includes/system/class-form.php

plugins.trac.wordpress.org/...includes/system/class-form.php

plugins.trac.wordpress.org/...includes/system/class-form.php

plugins.trac.wordpress.org/...includes/system/class-form.php

plugins.trac.wordpress.org/...includes/system/class-form.php

github.com/...ommit/946c1a700bbecc6080a427fd428de800334af824

plugins.trac.wordpress.org/...archiver&sfp_email=&sfph_mail=

cve.org (CVE-2026-2721)

nvd.nist.gov (CVE-2026-2721)

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