TI-2026-69548 Aliases CVE-2026-106603 GHSA-q6c9-q8g8-hh32

Authorization bypass in Groundhogg HollerBox WordPress plugin

LOW 34CWE-639Published 2026-10-08 · Updated 2026-10-09

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · Low
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

Groundhogg HollerBox, a WordPress plugin, is affected through version 2.3.14. An authorization check relies on a user-controlled key, so a user can reach data or actions that should be restricted (CWE-639). A remote attacker with no privileges and no user interaction can cause limited integrity and availability impact.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Authorization Bypass Through User-Controlled Key vulnerability in Groundhogg HollerBox holler-box allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects HollerBox: from n/a through 2.3.14.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00214 11th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
trainingbusinesspros	HollerBox	up to 2.3.14	—	No fix listed	CNA

HollerBox Vendortrainingbusinesspros Affected up to 2.3.14 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Groundhogg HollerBox.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

2026-10-08 Threatist record created from CVE-2026-106603
2026-10-08 Alias added: GHSA-q6c9-q8g8-hh32
2026-10-08 CISA SSVC decision points changed
2026-10-08 Priority changed: MEDIUM → LOW

References

Other 1

https://patchstack.com/database/wordpress/plugin/holler-box/vulnerability/wordpress-hollerbox-plugin-2-3-14-insecure-direct-object-references-idor-vulnerability?_s_id=cve

TI-2023-01346 Groundhogg Contacts < 2.7.9.4 - Admin+ SQLi CVSS 3.1HIGH 7.2
TI-2023-01986 HollerBox < 2.1.4 - Admin+ SQL Injection CVSS 3.1MEDIUM 4.9
TI-2019-11742 The groundhogg plugin before 1.3.5 for WordPress has… CVSS 3.0HIGH 8.8
TI-2025-00313 Groundhogg <= 3.7.3.5 - Authenticated (Author+) Arbitrary File Upload via gh_big_file_upload Function CVSS 3.1HIGH 8.8
TI-2026-67410 Improper privilege management in trainingbusinesspros Groundhogg — CRM, Newsletters, and… CVSS 3.1HIGH 8.8
TI-2023-17022 WordPress Groundhogg Plugin <= 2.7.11 is vulnerable to Cross Site Request Forgery (CSRF) CVSS 3.1HIGH 8.8

See all 35 →

Sources

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