Description

Rack is a modular Ruby web server interface. Prior to versions 2.2.22, 3.1.20, and 3.2.5, `Rack::Directory` generates an HTML directory index where each file entry is rendered as a clickable link. If a file exists on disk whose basename starts with the `javascript:` scheme (e.g. `javascript:alert(1)`), the generated index contains an anchor whose `href` is exactly `javascript:alert(1)`. Clicking the entry executes JavaScript in the browser (demonstrated with `alert(1)`). Versions 2.2.22, 3.1.20, and 3.2.5 fix the issue.

INFO

Published Date :

2026-02-18T18:59:31.964Z

Last Modified :

2026-02-18T19:42:35.101Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-25500 vulnerability.

Vendors Products
Rack
  • Rack

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Privileges Required
User Interaction
Scope
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Availability Impact