JCH Optimize < 6.0.1 - Subscriber+ Stored XSS via getcacheinfo Task Override
Priority LOW 37CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00413 35th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed JCH Optimize (Unknown): 6.0.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | JCH Optimize | before 6.0.1 | 6.0.1 | Patch available | CNA |
- JCH Optimize VendorUnknown Affected before 6.0.1 Fixed in 6.0.1 Patch available CNA
Remediation
- Fix · CNA JCH Optimize (Unknown) Fixed in 6.0.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-84934
- 2026-10-03 Alias added: GHSA-gpfv-rv3h-8jx7
References
Sources
- CVE-2026-84934 · CVE Program
- CVE-2026-84934 · NVD
- FIRST EPSS
- GHSA-gpfv-rv3h-8jx7 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences