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Vulnerability record · CVE-2026-84934 · published 5 September 2026

CVE-2026-84934: Cross-site scripting vulnerability

The JCH Optimize WordPress plugin before 6.0.1 does not perform a capability check on one of its authenticated AJAX actions and lets the request choose which internal action runs, allowing any authenticated users such as Subscribers to import arbitrary JCH Optimize WordPress plugin before 6.0.1 settings and store a script that executes in the browser of any visitor or administrator viewing the site.

8.0 CVSS 3.1 High EPSS 0.41% · top 66.9% CWE-79 · Cross-site scripting Deferred
8.0CVSS 3.1 base score
0.41%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
8 Sep 2026Last modified by NVD

Description

The JCH Optimize WordPress plugin before 6.0.1 does not perform a capability check on one of its authenticated AJAX actions and lets the request choose which internal action runs, allowing any authenticated users such as Subscribers to import arbitrary JCH Optimize WordPress plugin before 6.0.1 settings and store a script that executes in the browser of any visitor or administrator viewing the site.

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

References

LinkTags
https://wpscan.com/vulnerability/d808ad17-d20e-4ee5-94f3-935c10cde772/

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Source: NIST National Vulnerability Database (record CVE-2026-84934), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.