CVE-2026-105881— WordPress User Registration plugin <= 5.2.8 - Cross Site Scripting (XSS) vulnerability
Quick assessment
Affected
ThemeGrill User Registration
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.
在 ThemeGrill 用户注册插件（user-registration）中，存在网页生成过程中对用户输入处理不当的漏洞（跨站脚本攻击，XSS）。该漏洞可导致存储型跨站脚本攻击（Stored XSS）。受影响的用户注册插件版本范围为：从初始版本（n/a）至 5.2.8 版（包含 5.2.8）。
Possible ATT&CK Techniques 1 AI
T1189 · Drive-by CompromiseAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| ThemeGrill | User Registration | ≤ 5.2.8 |
affected |
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I. Basic Information for CVE-2026-105881
Vulnerability Information
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Vulnerability Title
WordPress User Registration plugin <= 5.2.8 - Cross Site Scripting (XSS) vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeGrill User Registration user-registration allows Stored XSS.This issue affects User Registration: from n/a through 5.2.8.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
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 |
|---|---|---|---|---|
| ThemeGrill | User Registration | 0 ~ 5.2.8 | - |
|
II. Public POCs for CVE-2026-105881
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-105881 (1)
Same Patch Batch · ThemeGrill · 2026-10-13 · 5 CVEs total
| CVE-2026-103076 | 5.4 MEDIUM | WordPress User Registration plugin <= 5.2.8 - Cross Site Request Forgery (CSRF) vulnerabil |
| CVE-2026-109699 | 5.4 MEDIUM | WordPress User Registration plugin <= 5.2.8 - Broken Access Control vulnerability |
| CVE-2026-106597 | 5.3 MEDIUM | WordPress User Registration plugin <= 5.2.8 - Broken Access Control vulnerability |
| CVE-2026-106598 | 5.3 MEDIUM | WordPress User Registration plugin <= 5.2.8 - Sensitive Data Exposure vulnerability |
IV. Related Vulnerabilities
Same product: User Registration
-
CVE-2026-109699
WordPress User Registration plugin <= 5.2.8 - Broken Access -
CVE-2026-106598
WordPress User Registration plugin <= 5.2.8 - Sensitive Data -
CVE-2026-103076
WordPress User Registration plugin <= 5.2.8 - Cross Site Req -
CVE-2026-106597
WordPress User Registration plugin <= 5.2.8 - Broken Access -
CVE-2026-96334
WordPress User Registration plugin <= 5.2.7 - Broken Access
Same vendor: ThemeGrill
-
CVE-2026-109699
WordPress User Registration plugin <= 5.2.8 - Broken Access -
CVE-2026-106598
WordPress User Registration plugin <= 5.2.8 - Sensitive Data -
CVE-2026-103076
WordPress User Registration plugin <= 5.2.8 - Cross Site Req -
CVE-2026-106597
WordPress User Registration plugin <= 5.2.8 - Broken Access -
CVE-2026-96334
WordPress User Registration plugin <= 5.2.7 - Broken Access
Same weakness: CWE-79
-
CVE-2026-63171
Omnispace Agora Project < 26.10.0 Stored XSS via Category De -
CVE-2026-63169
Omnispace Agora Project < 26.10.0 Stored XSS via Messenger I -
CVE-2026-19810
Cross-Site Scripting (XSS) in Symantec Endpoint Detection an -
CVE-2026-63168
Omnispace Agora Project < 26.10.0 Stored XSS via Nested POST -
CVE-2026-63157
Omnispace Agora Project < 26.10.0 Stored XSS via Links Modul
V. Comments for CVE-2026-105881
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