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-2026-81660
Unknown Groundhogg — CRM, Newsletters, and Marketing Automation — Groundhogg < 4.5.13 - Unauthenticated Stored XSS via Web Form Dropdown/Radio Field
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N R U H H H 8.8 .0050 41.0 —
AFFECTED
Product Versions Fixed
Groundhogg — CRM, Newsletters, and Marketing Automation unspecified —
TIMELINE
Aug 27 Reserved by WPScan
Aug 30 Published (CNA: WPScan)
Aug 31 EXPLOIT PUBLISHED — CVE-2026-81660 (Unknown Groundhogg — CRM, Newsletters, and Marketing Automation). Public exploit reference added.
Description
The Groundhogg — CRM, Newsletters, and Marketing Automation WordPress plugin before 4.5.13 does not validate or escape values submitted to some optional web form fields before storing them and outputting them back in an administrative area, allowing unauthenticated users to perform Stored Cross-Site Scripting attacks against high privilege users.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| August 27, 2026 | Reserved | Reserved by WPScan |
| August 30, 2026 | Published | Published (CNA: WPScan) |
| August 31, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-81660 (Unknown Groundhogg — CRM, Newsletters, and Marketing Automation). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Unknown | Groundhogg — CRM, Newsletters, and Marketing Automation | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-81660 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.
