Groundhogg < 4.5.13 - Unauthenticated Stored XSS via Web Form Dropdown/Radio Field (CVE-2026-81660) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-81660

Groundhogg < 4.5.13 - Unauthenticated Stored XSS via Web Form Dropdown/Radio Field

Answer in brief

CVE-2026-81660 records a Unknown severity vulnerability in Groundhogg < 4.5.13 - Unauthenticated Stored XSS via Web Form Dropdown/Radio Field. The current sources do not mark it as known exploited. The current feed maps Unknown/Groundhogg — CRM, Newsletters, and Marketing Automation (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 30, 2026Updated Aug 30, 2026Source checked Aug 30, 2026First seen by HOL Aug 30, 2026Material review Aug 30, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/Groundhogg — CRM, Newsletters, and Marketing Automation (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Unknown/Groundhogg — CRM, Newsletters, and Marketing Automationgeneric	>=0 <4.5.13	4.5.13

Recommended response

Check inventory. Check lockfiles and deployed manifests for Unknown/Groundhogg — CRM, Newsletters, and Marketing Automation.
Review the reported fix. Update Unknown/Groundhogg — CRM, Newsletters, and Marketing Automation to 4.5.13 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 30, 2026

Sources and claim methodology

Source referencewpscan.com

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.