Enable jQuery Migrate Helper: A security weakness
Enable jQuery Migrate Helper is affected by a security weakness. Exploitation requires an authenticated subscriber account. 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
- See mitigation notes
- 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.
No fixed release is identified. Update Enable jQuery Migrate Helper when a release after 1.4.1 becomes available; until then, disable and remove it when the site's risk warrants.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
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