Medium CVSS 5.4

Overview

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache VCL in the User Lookup form. A user with sufficient rights to be able to view this part of the site can craft a URL or be tricked in to clicking a URL that will give a specified user elevated rights.

This issue affects all versions of Apache VCL through 2.5.1.

Users are recommended to upgrade to version 2.5.2, which fixes the issue.

Risk analysis

This vulnerability is rated 🟡 MEDIUM.

  • CVSS: 5.4 (MEDIUM)
  • Detected tags: apache, xss (tag impact: MODERATE)

Recommended actions:

  • Apply context-aware output encoding.
  • Enable Content-Security-Policy and HttpOnly/SameSite cookies.

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