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-2026-84899
Unknown VikWidgetsLoader — VikWidgetsLoader < 1.12.0 - Contributor+ Stored XSS via Gutenberg Block class_suffix
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
VikWidgetsLoader 1.11.0 – —
TIMELINE
Sep 2 Reserved by WPScan
Sep 5 Published (CNA: WPScan)
Sep 6 EXPLOIT PUBLISHED — CVE-2026-84899 (Unknown VikWidgetsLoader). Public exploit reference added.
Description
The VikWidgetsLoader WordPress plugin before 1.12.0 does not sanitise or escape a block attribute before outputting it inside an inline script, allowing users with the Contributor role to store arbitrary JavaScript that executes in the browser of any user viewing the affected post, including the administrator who reviews the pending submission.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| September 2, 2026 | Reserved | Reserved by WPScan |
| September 5, 2026 | Published | Published (CNA: WPScan) |
| September 6, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-84899 (Unknown VikWidgetsLoader). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Unknown | VikWidgetsLoader | — | 1.11.0 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-84899 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.
