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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.

PUBLISHED Reserved 2026-03-07 | Published 2026-05-14 | Updated 2026-05-14 | Assigner Wordfence




HIGH: 7.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Problem types

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

Product status

Default status
unaffected

Any version
affected

Timeline

2026-02-22:Discovered
2026-05-13:Disclosed

Credits

Do Phuc finder

References

www.wordfence.com/...-4da3-450d-bf1e-5c9f0aab02a1?source=cve

plugins.trac.wordpress.org/changeset/3485733/worker

cve.org (CVE-2026-3718)

nvd.nist.gov (CVE-2026-3718)

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