Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-86784
Unknown Visualizer — Visualizer < 4.0.8 - Contributor+ Stored XSS via JSON Data Source
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L H R U H H H 6.8 .0043 35.1 —
AFFECTED
Product Versions Fixed
Visualizer unspecified —
TIMELINE
Sep 8 Reserved by WPScan
Sep 16 Published (CNA: WPScan)
Sep 17 EXPLOIT PUBLISHED — CVE-2026-86784 (Unknown Visualizer). Public exploit reference added.
Description
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| September 8, 2026 | Reserved | Reserved by WPScan |
| September 16, 2026 | Published | Published (CNA: WPScan) |
| September 17, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-86784 (Unknown Visualizer). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Unknown | Visualizer | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-86784 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.