CVE-2026-84934

JCH Optimize < 6.0.1 - Subscriber+ Stored XSS via getcacheinfo Task Override

Published Sep 5, 2026 CVSS 3.1 · 8 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

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History
Type Values Removed Values Added
First Time appeared Jch Optimize Project
Jch Optimize Project jch Optimize
Wordpress
Wordpress wordpress
Vendors & Products Jch Optimize Project
Jch Optimize Project jch Optimize
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Weaknesses CWE-79
Metrics cvssV3_1

{'score': 8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title JCH Optimize < 6.0.1 - Subscriber+ Stored XSS via getcacheinfo Task Override
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Sep 6, 2026, 10:24 AM
Reserved
Sep 2, 2026, 4:26 PM
Status
Deferred
Published
Sep 5, 2026, 7:17 AM
Modified
Sep 8, 2026, 7:15 PM