🔐 CVE Alert

CVE-2026-2721

MEDIUM 4.8

MailArchiver <= 4.4.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via Settings

CVSS Score
4.8
EPSS Score
0.0%
EPSS Percentile
0th

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.

CWE CWE-79
Vendor pierrelannoy
Product mailarchiver
Published Mar 7, 2026
Last Updated Apr 8, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

pierrelannoy / MailArchiver
0 ≤ 4.4.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/df2674c9-da77-412c-a812-f1749f54d04b?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/mailarchiver/trunk/includes/system/class-form.php#L92 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/mailarchiver/tags/4.4.0/includes/system/class-form.php#L92 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/mailarchiver/tags/4.4.0/includes/system/class-form.php#L55 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/mailarchiver/tags/4.4.0/includes/system/class-form.php#L126 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/mailarchiver/tags/4.4.0/includes/system/class-form.php#L156 github.com: https://github.com/Pierre-Lannoy/wp-mailarchiver/commit/946c1a700bbecc6080a427fd428de800334af824 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3465101%40mailarchiver&new=3465101%40mailarchiver&sfp_email=&sfph_mail=

Credits

Ronnachai Chaipha