[DRE-maint] Bug#1128480: ruby-rack: CVE-2026-25500

[Salvatore Bonaccorso]

Source: ruby-rack
Version: 3.2.4-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>
Control: found -1 3.1.18-1
Control: found -1 3.1.18-1~deb13u1
Control: found -1 2.2.20-0+deb12u1

Hi,

The following vulnerability was published for ruby-rack.

CVE-2026-25500[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-25500
    https://www.cve.org/CVERecord?id=CVE-2026-25500
[1] https://github.com/rack/rack/security/advisories/GHSA-whrj-4476-wvmp

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore