Enable jQuery Migrate Helper: A security weakness
Enable jQuery Migrate Helper is affected by a security weakness. Exploitation requires at least subscriber-level access. The resulting impact depends on how the affected component exposes the vulnerable operation. The published affected range is <= 1.4.1.
- Component
- Enable jQuery Migrate Helper
- Plugin slug
enable-jquery-migrate-helper- Affected
- <= 1.4.1
- Safe version
> 1.4.1- Published
- May 27, 2026
- Weakness
- CWE-862 — Missing Authorization
This CVE was published May 27, 2026 and is one of 1 known issue for this plugin.
Update, patch or deactivate.
Update Enable jQuery Migrate Helper to a release after 1.4.1, or disable and remove it until a fixed version is available.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical 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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N