Visualizer < 4.0.8 - Contributor+ Stored XSS via JSON Data Source
Priority LOW 32CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- 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 Visualizer WordPress plugin before 4.0.8 does not sanitise and escape a chart's JSON data source configuration before outputting it back in the chart editor, allowing users with the Contributor role and above to store JavaScript that executes in the browser of any higher-privileged user, such as an administrator, who reviews the affected chart.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00431 37th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Visualizer (Unknown): 4.0.8
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 | Visualizer | before 4.0.8 | 4.0.8 | Patch available | CNA |
- Visualizer VendorUnknown Affected before 4.0.8 Fixed in 4.0.8 Patch available CNA
Remediation
- Fix · CNA Visualizer (Unknown) Fixed in 4.0.8
Timeline
- 2026-10-02 Threatist record created from CVE-2026-86784
- 2026-10-03 Alias added: GHSA-424m-m5rp-gwfv
References
Sources
- CVE-2026-86784 · CVE Program
- CVE-2026-86784 · NVD
- FIRST EPSS
- GHSA-424m-m5rp-gwfv · 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