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OpenAdvisories
Medium · 4.8 CVE-2026-2721 EUVD-2026-10103GHSA-9853-xxjp-h6jv

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

Published Mar 7, 2026 · Updated Apr 8, 2026 · Assigned by Wordfence

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.

Affected products

VendorProductAffectedFixed
pierrelannoy MailArchiver ≤ 4.4.0 —

References