Medium severity · published Oct 8, 2026
CVE-2026-106603
WordPress HollerBox plugin <= 2.3.14 - Insecure Direct Object References (IDOR) vulnerability
6.5
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HO
HollerBox · Groundhogg
through 2.3.14 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-106603
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-106603
vdb-entry
https://patchstack.com/database/wordpress/plugin/holler-box/vulnerability/wordpress-hollerbox-plugin-2-3-14-insecure-direct-object-references-idor-vulnerability?_s_id=cve
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