CVE-2026-3279

medium

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.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/1a74d5f4-1dd8-4d49-b4ce-8ba7ac9cbcc7?source=cve

https://plugins.trac.wordpress.org/browser/enable-jquery-migrate-helper/trunk/class-jquery-migrate-helper.php#L256

https://plugins.trac.wordpress.org/browser/enable-jquery-migrate-helper/trunk/class-jquery-migrate-helper.php#L225

https://plugins.trac.wordpress.org/browser/enable-jquery-migrate-helper/tags/1.4.1/class-jquery-migrate-helper.php#L256

https://plugins.trac.wordpress.org/browser/enable-jquery-migrate-helper/tags/1.4.1/class-jquery-migrate-helper.php#L225

Details

Source: Mitre, NVD

Published: 2026-05-27

Updated: 2026-05-27

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:C/A:N

Severity: Medium

CVSS v3

Base Score: 6.5

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

Severity: Medium

EPSS

EPSS: 0.00028