Skip to content
Heist/ feed
UnratedFix available

DEBIAN-CVE-2026-25500

Type: advisorySource: OSV1 source record

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.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-25500

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-25500

ruby-rack

Source reference: /affected/0/package/name

Affected versions
2.2.13-1~deb12u1

Source reference: /affected/0/versions

2.2.20-0+deb12u1

Source reference: /affected/0/versions

2.2.6.4-1

Source reference: /affected/0/versions

2.2.6.4-1+deb12u1

Source reference: /affected/0/versions

2.2.7-1

Source reference: /affected/0/versions

2.2.7-1.1

Source reference: /affected/0/versions

Fixed versions
2.2.22-0+deb12u1

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

ruby-rack

Source reference: /affected/1/package/name

Affected versions
3.1.16-0.1

Source reference: /affected/1/versions

3.1.18-1

Source reference: /affected/1/versions

3.1.18-1~deb13u1

Source reference: /affected/1/versions

Fixed versions
3.1.20-0+deb13u1

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

ruby-rack

Source reference: /affected/2/package/name

Affected versions
3.1.16-0.1

Source reference: /affected/2/versions

3.1.18-1

Source reference: /affected/2/versions

3.1.18-1~deb13u1

Source reference: /affected/2/versions

3.2.4-1

Source reference: /affected/2/versions

Fixed versions
3.2.5-1

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2.2.22-0+deb12u1"
          }
        ]
      }
    ],
    "package": {
      "name": "ruby-rack",
      "purl": "pkg:deb/debian/ruby-rack?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "2.2.13-1~deb12u1",
      "2.2.20-0+deb12u1",
      "2.2.6.4-1",
      "2.2.6.4-1+deb12u1",
      "2.2.7-1",
      "2.2.7-1.1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25500.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "3.1.20-0+deb13u1"
          }
        ]
      }
    ],
    "package": {
      "name": "ruby-rack",
      "purl": "pkg:deb/debian/ruby-rack?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "3.1.16-0.1",
      "3.1.18-1",
      "3.1.18-1~deb13u1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25500.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "3.2.5-1"
          }
        ]
      }
    ],
    "package": {
      "name": "ruby-rack",
      "purl": "pkg:deb/debian/ruby-rack?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "3.1.16-0.1",
      "3.1.18-1",
      "3.1.18-1~deb13u1",
      "3.2.4-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25500.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#56257 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement