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Description

The Enable jQuery Migrate Helper plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `downgrade_jquery_version()` function in all versions up to, and including, 1.4.1. This is due to the function only verifying a nonce without checking user capabilities. This makes it possible for authenticated attackers, with Subscriber-level access and above, to downgrade the site-wide jQuery version from 3.7.1 to the legacy 1.12.4-wp release, which has knowns security vulnerabilities.

PUBLISHED Reserved 2026-02-26 | Published 2026-05-27 | Updated 2026-05-27 | Assigner Wordfence




MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Problem types

CWE-862 Missing Authorization

Product status

Default status
unaffected

Any version
affected

Timeline

2026-05-26:Disclosed

Credits

Chiao-Lin Yu finder

References

www.wordfence.com/...-1dd8-4d49-b4ce-8ba7ac9cbcc7?source=cve

plugins.trac.wordpress.org/...lass-jquery-migrate-helper.php

plugins.trac.wordpress.org/...lass-jquery-migrate-helper.php

plugins.trac.wordpress.org/...lass-jquery-migrate-helper.php

plugins.trac.wordpress.org/...lass-jquery-migrate-helper.php

cve.org (CVE-2026-3279)

nvd.nist.gov (CVE-2026-3279)

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