Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-10100— Simple Custom Login Page <= 1.0.3 - Authenticated (Admin+) Stored Cross-Site Scripting

Quick assessment

Affected
pattihis Simple Custom Login Page
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和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Simple Custom Login Page 1.0.3及之前版本存在跨站脚本漏洞，该漏洞源于颜色设置字段输入清理不足，可能导致具有管理员级别及以上权限的认证攻击者注入任意CSS规则，从而实施UI重定向和凭据钓鱼

CVSS 4.4 · Medium EPSS 0.18% · P8

Affected Version Matrix 1

VendorProduct Version RangeStatus
pattihis Simple Custom Login Page ≤ 1.0.3 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-10100

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Simple Custom Login Page <= 1.0.3 - Authenticated (Admin+) Stored Cross-Site Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
The Simple Custom Login Page plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the color settings fields (Page Background, Form Background, Text Color, Link Color) in versions up to and including 1.0.3. This is due to insufficient input sanitization of the color option values (they were registered with register_setting() and stored via the Settings API/update_option() with no sanitize_callback) combined with the values being output into a <style> block on wp-login.php using esc_attr(), which is incorrect for a CSS context (it does not escape ;, {, }, / or *). This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary CSS rules into the login page that are rendered for all unauthenticated visitors, enabling UI-redress and credential-phishing attacks.
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 plugin Simple Custom Login Page 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Simple Custom Login Page 1.0.3及之前版本存在跨站脚本漏洞，该漏洞源于颜色设置字段输入清理不足，可能导致具有管理员级别及以上权限的认证攻击者注入任意CSS规则，从而实施UI重定向和凭据钓鱼
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
pattihis Simple Custom Login Page 0 ~ 1.0.3 -

II. Public POCs for CVE-2026-10100

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-10100

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-10100 (1)

Other References for CVE-2026-10100 (1)

IV. Related Vulnerabilities

Same vendor: pattihis
Same weakness: CWE-79

V. Comments for CVE-2026-10100

No comments yet

Leave a comment