FireBox <= 3.1.10 — Authenticated (Author+) Remote Code Execution to Privilege Escalation
CVE-2026-76801Published · Updated Action summary
Affected: ≤3.1.10Update to 3.1.11 or newer
All remediation steps- Severity
- High8.8
- CVSS
- 8.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Weakness
- CWE-269 Privilege Escalation
- Required access
- Unknown
- Exploit prediction (EPSS)
- 0.9% chance in 30 days61th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
FireBox – WooCommerce Popup Builder, Exit Intent Popup, Email Optin & Cart Abandonment firebox
- Affected≤ 3.1.10
- Patched in3.1.11
Update to 3.1.11 or newer.
You are affected if you run ≤ 3.1.10. Version 3.1.11 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under FireBox – WooCommerce Popup Builder, Exit Intent Popup, Email Optin & Cart Abandonment.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 3.1.11, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch FireBox – WooCommerce Popup Builder, Exit Intent Popup, Email Optin & Cart Abandonment to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Wordfence PRISM.
The FireBox – WooCommerce Popup Builder, Exit Intent Popup, Email Optin & Cart Abandonment plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 3.1.10 via the value function. This is due to a trivially bypassable regex blacklist in Executer::allowedToRun() that fails to block WordPress core functions such as wp_insert_user, update_option, and file_put_contents, combined with no sanitization of PHP condition rule values stored via the firebox_meta REST endpoint. This makes it possible for authenticated attackers, with author-level access and above, to execute code on the server. On sites upgraded from a version prior to 3.1.10, the Migrator::preserveCampaignRoleAccess() function automatically grants the edit_fireboxes and publish_fireboxes capabilities to the Author role, lowering the effective entry point to Author-level access.
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 FireBox – WooCommerce Popup Builder, Exit Intent Popup, Email Optin & Cart Abandonment
All 4| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Authenticated (Author+) SQL Injection via FireBox Form Display Condition ≤3.1.13Update to 3.1.14 | CVE-2026-104724 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'form_id' Parameter ≤3.1.7Update to 3.1.8 | CVE-2026-12120 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤3.1.0-freeUpdate to 3.1.1-free | CVE-2025-67545 |
- Medium5.3Authenticated (Author+) SQL Injection via FireBox Form Display Condition
≤3.1.13Update to 3.1.14
- Medium5.3Unauthenticated Sensitive Information Exposure in 'form_id' Parameter
≤3.1.7Update to 3.1.8
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤3.1.0-freeUpdate to 3.1.1-free
Same weakness (Privilege Escalation)
All Privilege Escalation| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity high, CVSS 8.8
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.