CVE-2026-3718: ManageWP Worker <= 4.9.31 - Unauthenticated Stored Cross-Site Scripting via 'MWP-Key-Name' Header
The ManageWP Worker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'MWP-Key-Name' HTTP request header in all versions up to, and including, 4.9.31. This is due to insufficient input sanitization and output escaping of attacker-controlled header values. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator visits the plugin's connection management page with debug parameters.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-3718?
CVE-2026-3718 is classified as a medium severity vulnerability due to the potential for stored cross-site scripting attacks.
How do I fix CVE-2026-3718?
To fix CVE-2026-3718, update the ManageWP Worker plugin to a version newer than 4.9.31.
What impact does CVE-2026-3718 have on my WordPress site?
CVE-2026-3718 could allow attackers to inject malicious scripts into your site, impacting users and site security.
Is my version of ManageWP Worker affected by CVE-2026-3718?
If you are using ManageWP Worker version 4.9.31 or earlier, your installation is affected by CVE-2026-3718.
Who is affected by CVE-2026-3718?
Anyone using ManageWP Worker versions up to and including 4.9.31 is vulnerable to CVE-2026-3718.