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CVE-2026-76801— FireBox <= 3.1.10 - Authenticated (Author+) Remote Code Execution to Privilege Escalation

Quick assessment

Affected
fireplugins FireBox – WooCommerce Popup Builder, Exit Intent Popup, Email Optin & Cart Abandonment
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 插件 FireBox – WooCommerce Popup Builder, Exit Intent Popup, Email Optin & Cart Abandonment 在截至且包括 3.1.10 的所有版本中，通过 函数存在远程代码执行（RCE）漏洞。 该漏洞的成因是 中使用的正则黑名单极其容易被绕过，未能有效拦截 、 和 等 WordPress 核心函数；同时，通过 REST 接口存储的 PHP 条件规则值未经过任何净化处理。因此，具备作者（Author）级或更高权限的经过身份验证

CVSS 8.8 · High
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I. Basic Information for CVE-2026-76801

Vulnerability Information
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Vulnerability Title
FireBox <= 3.1.10 - Authenticated (Author+) Remote Code Execution to Privilege Escalation
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
fireplugins FireBox – WooCommerce Popup Builder, Exit Intent Popup, Email Optin & Cart Abandonment 0 ~ 3.1.10 -

II. Public POCs for CVE-2026-76801

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III. Intelligence Information for CVE-2026-76801

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Other References for CVE-2026-76801 (6)

IV. Related Vulnerabilities

Same vendor: fireplugins
Same weakness: CWE-269

V. Comments for CVE-2026-76801

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