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CVE-2026-81660— Groundhogg < 4.5.13 - Unauthenticated Stored XSS via Web Form Dropdown/Radio Field

Quick assessment

Affected
Unknown Groundhogg — CRM, Newsletters, and Marketing Automation
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.

4.5.13 版本之前的 Groundhogg — CRM, 新闻通讯及营销自动化 WordPress 插件，在未对提交到某些可选网页表单字段中的值进行验证或转义的情况下，便将其存储并在管理区域中输出，这使得未认证的用户能够对高权限用户发起存储型跨站脚本（Stored XSS）攻击。

AI Predicted 8.8 Difficulty: Easy
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I. Basic Information for CVE-2026-81660

Vulnerability Information
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Vulnerability Title
Groundhogg < 4.5.13 - Unauthenticated Stored XSS via Web Form Dropdown/Radio Field
Source: CVE Program / CVE List V5
Vulnerability Description
The Groundhogg — CRM, Newsletters, and Marketing Automation WordPress plugin before 4.5.13 does not validate or escape values submitted to some optional web form fields before storing them and outputting them back in an administrative area, allowing unauthenticated users to perform Stored Cross-Site Scripting attacks against high privilege users.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Unknown Groundhogg — CRM, Newsletters, and Marketing Automation 0 ~ 4.5.13 -

II. Public POCs for CVE-2026-81660

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III. Intelligence Information for CVE-2026-81660

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Security Blog Posts for CVE-2026-81660 (1)

Same Patch Batch · Unknown · 2026-08-30 · 7 CVEs total

CVE-2026-81766 Really Simple Security < 9.8.0 - Multisite Subsite Admin+ Arbitrary Plugin Installation vi
CVE-2026-78364 MW WP Form < 5.1.6 - Editor+ Stored XSS via Inquiry Data List
CVE-2026-19722 WPvivid Backup & Migration < 0.9.133 - Admin+ Arbitrary File Write via Zip Slip in Backup
CVE-2026-76585 Customer Reviews for WooCommerce < 5.118.0 - Unauthenticated Stored XSS via 'comment' Para
CVE-2026-14835 SOGO Add Script to Individual Pages Header Footer <= 3.9 - Contributor+ Stored XSS via Pos
CVE-2026-14307 Geotargeting WP < 3.5.6.2 - Reflected XSS

IV. Related Vulnerabilities

Same product: Groundhogg — CRM, Newsletters, and Marketing Automation
Same vendor: Unknown

V. Comments for CVE-2026-81660

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