---
title: "CVE-2026-76801: FireBox WooCommerce Popup Builder - Remote Code Execution"
description: "FireBox WooCommerce Popup Builder up to 3.1.10 contains a remote code execution caused by insufficient sanitization and a bypassable regex blacklist in Executer::allowedToRun(), letting authenticated attackers with author-level access execute code on the server, exploit requires author-level or higher privileges."
url: https://panop.io/threat-heartbeat/CVE-2026-76801/
---

# CVE-2026-76801 FireBox WooCommerce Popup Builder - Remote Code Execution

FireBox WooCommerce Popup Builder up to 3.1.10 contains a remote code execution caused by insufficient sanitization and a bypassable regex blacklist in Executer::allowedToRun(), letting authenticated attackers with author-level access execute code on the server, exploit requires author-level or higher privileges.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.94% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-76801)

## Details

Type

Remote Code Execution

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

9 September 2026

Updated

15 October 2026

Weakness

[CWE-269](https://cwe.mitre.org/data/definitions/269.html)

## Vendor fix

Update to a version later than 3.1.10 or the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-76801](https://nvd.nist.gov/vuln/detail/CVE-2026-76801)
- [https://plugins.trac.wordpress.org/browser/firebox/tags/3.1.10/Inc/Core/FB/Meta.php#L411](https://plugins.trac.wordpress.org/browser/firebox/tags/3.1.10/Inc/Core/FB/Meta.php#L411)
- [https://plugins.trac.wordpress.org/browser/firebox/tags/3.1.10/Inc/Core/Migrator.php#L606](https://plugins.trac.wordpress.org/browser/firebox/tags/3.1.10/Inc/Core/Migrator.php#L606)
- [https://plugins.trac.wordpress.org/browser/firebox/tags/3.1.10/Inc/Framework/Inc/Base/Conditions/Conditions/PHP.php#L36](https://plugins.trac.wordpress.org/browser/firebox/tags/3.1.10/Inc/Framework/Inc/Base/Conditions/Conditions/PHP.php#L36)
- [https://plugins.trac.wordpress.org/browser/firebox/tags/3.1.10/Inc/Framework/Inc/Base/Executer.php#L231](https://plugins.trac.wordpress.org/browser/firebox/tags/3.1.10/Inc/Framework/Inc/Base/Executer.php#L231)
- [https://plugins.trac.wordpress.org/changeset?reponame=&old=3666018%40firebox&new=3666018%40firebox](https://plugins.trac.wordpress.org/changeset?reponame=&old=3666018%40firebox&new=3666018%40firebox)
- [https://www.wordfence.com/threat-intel/vulnerabilities/id/9c1d8ec3-de01-4496-8d8b-b9604f952b1e?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/9c1d8ec3-de01-4496-8d8b-b9604f952b1e?source=cve)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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