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CVE-2026-12477— Gravity Booster <= 5.26 - Authenticated (Editor+) Stored Cross-Site Scripting via 'stylerSettings' Parameter

Quick assessment

Affected
wpmonks Gravity Booster – Styles & Layouts for Gravity Forms
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 Gravity Booster是WordPress基金会开源的一款内容管理系统组件插件。 WordPress Gravity Booster 5.26及之前版本存在跨站脚本漏洞，该漏洞源于输入清理和输出转义不足，可能导致具有编辑器及以上权限的已认证攻击者在页面中注入任意Web脚本，当用户访问被注入页面时执行存储型跨站脚本攻击。

CVSS 4.4 · Medium EPSS 0.33% · P25

Affected Version Matrix 1

VendorProduct Version RangeStatus
wpmonks Gravity Booster – Styles & Layouts for Gravity Forms ≤ 5.26 affected
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I. Basic Information for CVE-2026-12477

Vulnerability Information
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Vulnerability Title
Gravity Booster <= 5.26 - Authenticated (Editor+) Stored Cross-Site Scripting via 'stylerSettings' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Gravity Booster – Styles & Layouts for Gravity Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 5.26 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Gravity Booster 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Gravity Booster是WordPress基金会开源的一款内容管理系统组件插件。 WordPress Gravity Booster 5.26及之前版本存在跨站脚本漏洞，该漏洞源于输入清理和输出转义不足，可能导致具有编辑器及以上权限的已认证攻击者在页面中注入任意Web脚本，当用户访问被注入页面时执行存储型跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
wpmonks Gravity Booster – Styles & Layouts for Gravity Forms 0 ~ 5.26 -

II. Public POCs for CVE-2026-12477

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III. Intelligence Information for CVE-2026-12477

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Vendor Advisories for CVE-2026-12477 (1)

IV. Related Vulnerabilities

Same vendor: wpmonks
Same weakness: CWE-79

V. Comments for CVE-2026-12477

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