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DEBIAN-CVE-2026-22860

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`’s path check used a string prefix match on the expanded path. A request like `/../root_example/` can escape the configured root if the target path starts with the root string, allowing directory listing outside the intended root. Versions 2.2.22, 3.1.20, and 3.2.5 fix the issue.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-22860

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-2026-22860

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-2026-22860.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-2026-22860.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-2026-22860.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#55578 · Revision 1
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Publisher date
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