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TI-2026-56319 Aliases CVE-2026-81660GHSA-c4g6-w433-v47v

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

Priority MEDIUM 41CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00505 43rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Groundhogg — CRM, Newsletters, and Marketing Automation (Unknown): 4.5.13

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownGroundhogg — CRM, Newsletters, and Marketing Automationbefore 4.5.134.5.13Patch availableCNA
  • Groundhogg — CRM, Newsletters, and Marketing Automation VendorUnknown Affected before 4.5.13 Fixed in 4.5.13 Patch available CNA

Remediation

  • Fix · CNA Groundhogg — CRM, Newsletters, and Marketing Automation (Unknown) Fixed in 4.5.13

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-81660
  2. 2026-10-03 Alias added: GHSA-c4g6-w433-v47v

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences