CVE catalog

CVE-2025-49007

ruby-rack affected and fixed versions

[CVE catalog]

Rack is a modular Ruby web server interface. Starting in version 3.1.0 and prior to version 3.1.16, there is a denial of service vulnerability in the Content-Disposition parsing component of Rack. This is very similar to the previous security issue CVE-2022-44571. Carefully crafted input can cause Content-Disposition header parsing in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. This header is used typically used in multipart parsing. Any applications that parse multipart posts using Rack (virtually all Rails applications) are impacted. Version 3.1.16 contains a patch for the vulnerability.

Severity
High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
Source
[NVD] · [CVE record]
EPSS
0.56% · Oct 27, 2026

Projects and upstream resources

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence
Original provider fields
{
  "package_releases": [
    {
      "name": "ruby-rack",
      "status": "fixed",
      "release": "sid",
      "version": "3.2.7-1"
    },
    {
      "name": "ruby-rack",
      "status": "fixed",
      "release": "forky",
      "version": "3.2.7-1"
    },
    {
      "name": "ruby-rack",
      "status": "fixed",
      "release": "trixie",
      "version": "3.1.20-0+deb13u1"
    },
    {
      "name": "ruby-rack",
      "status": "fixed",
      "release": "trixie-security",
      "version": "3.1.20-0+deb13u2"
    },
    {
      "name": "ruby-rack",
      "status": "not affected",
      "release": "bookworm",
      "version": "2.2.22-0+deb12u1"
    },
    {
      "name": "ruby-rack",
      "status": "not affected",
      "release": "bookworm-security",
      "version": "2.2.22-0+deb12u2"
    }
  ],
  "fixed_versions": [
    {
      "bug": 1107363,
      "name": "ruby-rack",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "3.1.16-0.1"
    },
    {
      "bug": 1107363,
      "name": "ruby-rack",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "3.1.16-0.1"
    },
    {
      "bug": 1107363,
      "name": "ruby-rack",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": "3.1.16-0.1"
    },
    {
      "bug": 1107363,
      "name": "ruby-rack",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "unimportant",
      "fixed_version": "0"
    }
  ],
  "distribution_packages": []
}

[Debian bug #1107363]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

  • [ruby-rack]Unknown
    Details (4)

    • 2.2.22-0+deb12u1 · all · bookworm

      Not affected

      dsa · ruby-rack · debian · bookworm

    • 2.2.22-0+deb12u1 · all · bookworm

      Not affected

      dsa · ruby-rack · debian · bookworm

    • 2.2.22-0+deb12u2 · all · bookworm-security

      Not affected

      dsa · ruby-rack · debian · bookworm

    • 2.2.22-0+deb12u2 · all · bookworm-security

      Not affected

      dsa · ruby-rack · debian · bookworm

[Debian 13 (Trixie)]

  • [ruby-rack]Unknown
    Details (5)

    • 3.1.20-0+deb13u1 · all · trixie

      Fixed · Fixed: 3.1.16-0.1

      dsa · ruby-rack · debian · 13

    • 3.1.20-0+deb13u1 · all · trixie

      Fixed · Fixed: 3.1.16-0.1

      dsa · ruby-rack · debian · 13

    • 3.1.20-0+deb13u1 · all · trixie-security

      Fixed · Fixed: 3.1.16-0.1

      dsa · ruby-rack · debian · 13

    • 3.1.20-0+deb13u1 · all · trixie-security · Historical version

      Fixed · Fixed: 3.1.16-0.1

      dsa · ruby-rack · debian · 13

    • 3.1.20-0+deb13u2 · all · trixie-security

      Fixed · Fixed: 3.1.16-0.1

      dsa · ruby-rack · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]