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Vulnerability record · CVE-2026-3718 · published 14 May 2026

CVE-2026-3718: Cross-site scripting vulnerability

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.

7.2 CVSS 3.1 High EPSS 0.32% · top 77.8% CWE-79 · Cross-site scripting Deferred
7.2CVSS 3.1 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References

LinkTags
https://plugins.trac.wordpress.org/changeset/3485733/worker
https://www.wordfence.com/threat-intel/vulnerabilities/id/db6f08f9-4da3-450d-bf1e-5c9f0aab02a1?source=cve

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Source: NIST National Vulnerability Database (record CVE-2026-3718), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.