Visualizer < 4.0.8 - Contributor+ Stored XSS via JSON Data Source

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-86784
StatePUBLISHED
AssignerWPScan
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-16 06:16:34 UTC
Updated2026-09-17 13:16:53 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 6.8 MEDIUM from ADP

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

EPSS: 0.001990000 probability, percentile 0.099280000 (date 2026-09-16)

Problem Types: CWE-79 | CWE-79 Cross-Site Scripting (XSS) | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED6.8MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary6.8MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Unknown Visualizer affected 4.0.8 semver Not specified

References

ReferenceSourceLinkTags
wpscan.com/vulnerability/9ac2d380-62fd-4967-8697-40175ffdf1c7 [email protected] wpscan.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Yaswanth Reddy Sunkara (en)

CNA: WPScan (en)

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