CVE-2025-3592: My-Blog-layui XSS Vulnerability

CVE-2025-3592 Overview

CVE-2025-3592 is a cross-site scripting (XSS) vulnerability [CWE-79] in ZHENFENG13 My-Blog-layui 1.0, an open-source blogging platform. The flaw resides in the /admin/v1/link/edit endpoint, where unsanitized user input in multiple parameters allows attackers to inject arbitrary JavaScript. An authenticated remote attacker can exploit the issue to execute script in the context of other users viewing the affected admin interface. The exploit has been publicly disclosed, and the vendor did not respond to disclosure attempts. No official patch is currently referenced in the advisory data.

Critical Impact
Authenticated attackers can inject JavaScript via the admin link edit endpoint, enabling session hijacking, admin UI defacement, and client-side action abuse against other administrators.

Affected Products

ZHENFENG13 My-Blog-layui 1.0
Deployments exposing /admin/v1/link/edit to untrusted authenticated users
cpe:2.3:a:zhenfeng13:my-blog-layui:1.0:*:*:*:*:*:*:*

Discovery Timeline

2025-04-14 - CVE-2025-3592 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-3592

Vulnerability Analysis

The vulnerability affects the link management functionality of the My-Blog-layui admin console. Input submitted to /admin/v1/link/edit is stored and later rendered without adequate output encoding. When an administrator views the links page, the injected payload executes in the browser under the application origin. Advisory data indicates multiple parameters on the endpoint may be affected, broadening the injection surface. Because the payload is persisted server-side, this behaves as a stored XSS rather than a reflected variant.

Root Cause

The root cause is missing input validation and output encoding when handling link edit fields in the admin controller. The application accepts HTML or script content in text fields that are later rendered directly into admin pages. This is a classic failure to apply contextual escaping on HTML sinks, mapped to [CWE-79].

Attack Vector

Exploitation requires network access to the admin interface and valid low-privilege authentication to reach the edit endpoint. User interaction is required because the payload fires when a victim administrator loads the affected admin view. An attacker crafts a malicious link entry containing JavaScript in a vulnerable parameter and submits it to /admin/v1/link/edit. The payload then executes in subsequent administrator sessions, allowing cookie theft, forged administrative requests, or UI manipulation. Technical reproduction details are available in the public write-up on GitHub and in the VulDB entry #304647.

Detection Methods for CVE-2025-3592

Indicators of Compromise

Stored link records in the My-Blog-layui database containing <script>, onerror=, onload=, or javascript: payloads
POST requests to /admin/v1/link/edit with HTML or script metacharacters in parameter values
Unexpected outbound requests from administrator browsers to attacker-controlled domains shortly after loading the links admin page

Detection Strategies

Inspect web server and application logs for requests to /admin/v1/link/edit containing encoded or raw <, >, script, onerror, or javascript: tokens
Deploy a Content Security Policy in report-only mode to surface inline script execution originating from admin pages
Review the links table in the backing database for stored HTML content that should not be present in text fields

Monitoring Recommendations

Alert on POST traffic to admin endpoints from non-administrative source networks or atypical user agents
Correlate admin session cookie usage across unusual IP addresses following access to the links management view
Forward web application and WAF logs to a central analytics platform to retain evidence of injection attempts

How to Mitigate CVE-2025-3592

Immediate Actions Required

Restrict access to /admin/v1/link/edit and the broader /admin/ path to trusted administrator IP ranges via reverse proxy or firewall rules
Audit existing link records and remove any entries containing HTML, script tags, or event-handler attributes
Rotate administrator credentials and session secrets if stored payloads are discovered
Place a Web Application Firewall (WAF) rule in front of the admin endpoint to block common XSS payloads

Patch Information

No vendor patch is referenced in the advisory data. The VulDB record notes the vendor was contacted but did not respond. Operators should monitor the upstream project for updates and treat the 1.0 release as unpatched. Until a fix is published, apply the compensating controls listed in the Workarounds section.

Workarounds

Deploy a strict Content Security Policy that disallows inline scripts (script-src 'self') on admin pages
Apply server-side input validation and HTML entity encoding on all link edit parameters before persistence and before rendering
Enforce the HttpOnly and Secure flags on administrator session cookies to limit theft via injected script
Remove or disable the public admin interface in production deployments and expose it only through an authenticated VPN

bash

# Example nginx hardening for the admin path
location /admin/ {
    allow 10.0.0.0/8;
    deny all;
    add_header Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-Frame-Options "DENY" always;
    proxy_pass http://my_blog_layui_backend;
}