6.1

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2023-26120

CVE-2023-26120: XXL-JOB vulnerable to Cross-site Scripting

XXL-JOB (com.xuxueli:xxl-job) versions 2.4.0 and earlier are vulnerable to cross-site scripting (XSS). An HTML uploaded payload can be executed successfully through /xxl-job-admin/user/add and /xxl-job-admin/user/update.

(GitHub Advisory)

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CVE-2023-26120

CVE-2023-26120:

6.1

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
com.xuxueli:xxl-job	maven	<= 2.4.0

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability manifests in user management endpoints /user/add and /user/update. These endpoints correspond to add() and update() methods in the UserController. The XSS occurs because: 1) User-supplied input parameters (like username) aren't properly sanitized before storage 2) Stored values are rendered in admin UI without output encoding. This matches the pattern of stored XSS vulnerabilities where unsanitized user input persists in the system and gets executed upon rendering. The confidence is high as the endpoint-to-controller mapping is standard in Spring MVC applications, and the vulnerability description explicitly identifies these endpoints as attack vectors.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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