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CVE-2026-19797— User Access Manager <= 2.3.18 - Reflected Cross-Site Scripting via 'tab_group_section' Parameter

Quick assessment

Affected
gm_alex User Access Manager
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 的用户访问管理器（User Access Manager）插件存在反射型跨站脚本攻击（Reflected Cross-Site Scripting, XSS）漏洞。该漏洞存在于所有版本中，直至并包括 2.3.18，原因是输入过滤（sanitization）和输出转义（escaping）不足，具体涉及 “tab_group_section” 参数。这允许未经认证的攻击者通过在页面中注入任意 Web 脚本，并在成功诱骗用户执行操作（例如点击链接）时触发该脚本执行。

CVSS 6.1 · Medium
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I. Basic Information for CVE-2026-19797

Vulnerability Information
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Vulnerability Title
User Access Manager <= 2.3.18 - Reflected Cross-Site Scripting via 'tab_group_section' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The User Access Manager plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'tab_group_section' parameter in all versions up to, and including, 2.3.18 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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

Affected Products

Vendor Product Affected Versions CPE Subscribe
gm_alex User Access Manager 0 ~ 2.3.18 -

II. Public POCs for CVE-2026-19797

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III. Intelligence Information for CVE-2026-19797

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Other References for CVE-2026-19797 (6)

IV. Related Vulnerabilities

Same product: User Access Manager
Same vendor: gm_alex
Same weakness: CWE-79

V. Comments for CVE-2026-19797

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