HollerBox — Fast & Effective Popups & Lead-Generation <= 2.3.14 — Unauthenticated Insecure Direct Object Reference
CVE-2026-106603Published · Updated Action summary
Affected: ≤2.3.14Update to 2.3.15 or newer
All remediation steps- Severity
- Medium5.3
- CVSS
- 5.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Required access
- No account needed
- Exploit prediction (EPSS)
- 0.2% chance in 30 days11th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
HollerBox — Fast & Effective Popups & Lead-Generation holler-box
- Affected≤ 2.3.14
- Patched in2.3.15
Update to 2.3.15 or newer.
You are affected if you run ≤ 2.3.14. Version 2.3.15 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under HollerBox — Fast & Effective Popups & Lead-Generation.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 2.3.15, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch HollerBox — Fast & Effective Popups & Lead-Generation to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to benzdeus.
The HollerBox — Fast & Effective Popups & Lead-Generation plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.3.14. This is due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to perform an unauthorized action.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in HollerBox — Fast & Effective Popups & Lead-Generation
All 4| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤2.3.10.1Update to 2.3.11 | CVE-2026-48885 | |
| Medium4.4 | Authenticated (Administrator+) Stored Cross-Site Scripting ≤2.3.2Update to 2.3.3 | CVE-2023-41657 | |
| Medium6.6 | Authenticated (edit_popups+) SQL Injection <2.1.4Update to 2.1.4 | CVE-2023-2111 |
- High7.2Unauthenticated Stored Cross-Site Scripting
≤2.3.10.1Update to 2.3.11
- Medium4.4Authenticated (Administrator+) Stored Cross-Site Scripting
≤2.3.2Update to 2.3.3
- Medium6.6Authenticated (edit_popups+) SQL Injection
<2.1.4Update to 2.1.4
Timeline
CVE published
Severity medium, CVSS 5.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- EPSS
- Exploit Prediction Scoring System by FIRST.org.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.