CVE catalog

CVE-2025-59830

Rack vulnerabilities

[CVE catalog]

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
0.57% · Oct 25, 2026

Rack is a modular Ruby web server interface. Prior to version 2.2.18, Rack::QueryParser enforces its params_limit only for parameters separated by &, while still splitting on both & and ;. As a result, attackers could use ; separators to bypass the parameter count limit and submit more parameters than intended. Applications or middleware that directly invoke Rack::QueryParser with its default configuration (no explicit delimiter) could be exposed to increased CPU and memory consumption. This can be abused as a limited denial-of-service vector. This issue has been patched in version 2.2.18.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debianruby-racksid3.2.7-1fixed
Debianruby-rackforky3.2.7-1fixed
Debianruby-racktrixie3.1.20-0+deb13u1fixed
Debianruby-racktrixie-security3.1.20-0+deb13u2fixed
Debianruby-rackbookworm2.2.22-0+deb12u1fixed
Debianruby-rackbookworm-security2.2.22-0+deb12u2fixed
Ubunturuby-racknoble2.2.7-1ubuntu0.5fixed
Ubunturuby-racknoble2.2.7-1ubuntu0.4fixed
CperackNot reported2.2.18fixed
Ubunturuby-rackpro2.0.6-3vulnerable
Ubunturuby-rackpro2.0.7-2vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1+esm1vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1+esm2vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1+esm3vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1+esm4vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1+esm5vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1+esm6vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1+esm7vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1+esm8fixed
Ubunturuby-rack22.042.1.4-3vulnerable
Ubunturuby-rack22.042.1.4-4vulnerable
Ubunturuby-rack22.042.1.4-5vulnerable
Ubunturuby-rack22.042.1.4-5ubuntu1vulnerable
Ubunturuby-rack22.042.1.4-5ubuntu1.1vulnerable
Ubunturuby-rack22.042.1.4-5ubuntu1.2fixed
Ubunturuby-rack24.042.2.4-3vulnerable
Ubunturuby-rack24.042.2.7-1vulnerable
Ubunturuby-rack24.042.2.7-1ubuntu0.1vulnerable
Ubunturuby-rack24.042.2.7-1ubuntu0.2vulnerable
Ubunturuby-rack24.042.2.7-1ubuntu0.3vulnerable
Ubunturuby-rack24.042.2.7-1ubuntu0.4vulnerable
Ubunturuby-rack24.042.2.7-1ubuntu0.5fixed
Ubunturuby-rack25.102.2.7-1.1vulnerable
Ubunturuby-rack25.103.1.16-0.1vulnerable
Ubunturuby-rack25.103.1.16-0.1ubuntu0.1fixed
Ubunturuby-rackpro2.0.6-3vulnerable
Ubunturuby-rackpro2.0.7-2vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1+esm1vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1+esm2vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1+esm3vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1+esm4vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1+esm5vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1+esm6vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1+esm7vulnerable
Ubunturuby-rackpro2.0.7-2ubuntu0.1+esm8fixed
Ubunturuby-rack22.042.1.4-3vulnerable
Ubunturuby-rack22.042.1.4-4vulnerable
Ubunturuby-rack22.042.1.4-5vulnerable
Ubunturuby-rack22.042.1.4-5ubuntu1vulnerable
Ubunturuby-rack22.042.1.4-5ubuntu1.1vulnerable
Ubunturuby-rack22.042.1.4-5ubuntu1.2fixed
Ubunturuby-rack24.042.2.4-3vulnerable
Ubunturuby-rack24.042.2.7-1vulnerable
Ubunturuby-rack24.042.2.7-1ubuntu0.1vulnerable
Ubunturuby-rack24.042.2.7-1ubuntu0.2vulnerable
Ubunturuby-rack24.042.2.7-1ubuntu0.3vulnerable
Ubunturuby-rack24.042.2.7-1ubuntu0.4fixed
Opensuserubygem-rack-2.2tumbleweed2.2.18-1.1fixed
Ubunturuby-rack24.042.2.4-3vulnerable
Ubunturuby-rack24.042.2.7-1vulnerable
Ubunturuby-rack24.042.2.7-1ubuntu0.1vulnerable
Ubunturuby-rack24.042.2.7-1ubuntu0.2vulnerable
Ubunturuby-rack24.042.2.7-1ubuntu0.3vulnerable
Ubunturuby-rack24.042.2.7-1ubuntu0.4fixed

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debianruby-racksourcesid3.0.8-2not yet assignedNot reported[1116431]
Debianruby-racksourceforky3.0.8-2not yet assignedNot reported[1116431]
Debianruby-racksourcetrixie3.0.8-2not yet assignedNot reported[1116431]
Debianruby-racksourcebookworm2.2.20-0+deb12u1not yet assignedNot reported[1116431]
Ubunturuby-rackdebnoble2.2.7-1ubuntu0.5Not reportedNot reportedNot reported
Ubunturuby-rackdebnoble2.2.7-1ubuntu0.4Not reportedNot reportedNot reported
CperackcpeNot reported2.2.18Not reportedNVD-CVE-2025-59830Not reported
Ubunturuby-rackdebpro2.0.7-2ubuntu0.1+esm8Not reportedUSN-7960-1Not reported
Ubunturuby-rackdeb22.042.1.4-5ubuntu1.2Not reportedUSN-7960-1Not reported
Ubunturuby-rackdeb24.042.2.7-1ubuntu0.5Not reportedUSN-7960-1Not reported
Ubunturuby-rackdeb25.103.1.16-0.1ubuntu0.1Not reportedUSN-7960-1Not reported
Ubunturuby-rackdebpro2.0.7-2ubuntu0.1+esm8Not reportedUBUNTU-CVE-2025-59830Not reported
Ubunturuby-rackdeb22.042.1.4-5ubuntu1.2Not reportedUBUNTU-CVE-2025-59830Not reported
Ubunturuby-rackdeb24.042.2.7-1ubuntu0.4Not reportedUBUNTU-CVE-2025-59830Not reported
Opensuserubygem-rack-2.2rpmtumbleweed2.2.18-1.1Not reportedOPENSUSE-SU-2025:15587-1Not reported
Ubunturuby-rackdeb24.042.2.7-1ubuntu0.4Not reportedUSN-7784-1Not reported

[Debian bug #1116431]

OpenFactory catalog packages

[openSUSE Tumbleweed]

  • [ruby4.0-rubygem-rack-2.2]Unknown

    Source package: [rubygem-rack-2.2]

    Details (1)

    • 2.2.23-1.3 · x86_64 · tumbleweed

      Unknown · Fixed: 2.2.18-1.1

      Version impact unknown

      usn · rubygem-rack-2.2 · opensuse · tumbleweed

[Debian 12 (Bookworm)]

  • [ruby-rack]Fixed
    Details (4)

    • 2.2.22-0+deb12u1 · all · bookworm

      Fixed · Fixed: 2.2.20-0+deb12u1

      usn · ruby-rack · debian · bookworm; usn · ruby-rack · debian · 12

    • 2.2.22-0+deb12u1 · all · bookworm

      Fixed · Fixed: 2.2.20-0+deb12u1

      usn · ruby-rack · debian · bookworm; usn · ruby-rack · debian · 12

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

      Fixed · Fixed: 2.2.20-0+deb12u1

      usn · ruby-rack · debian · bookworm; usn · ruby-rack · debian · 12

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

      Fixed · Fixed: 2.2.20-0+deb12u1

      usn · ruby-rack · debian · bookworm; usn · ruby-rack · debian · 12

[Debian 13 (Trixie)]

  • [ruby-rack]Fixed
    Details (5)

    • 3.1.20-0+deb13u1 · all · trixie

      Fixed · Fixed: 3.0.8-2

      usn · ruby-rack · debian · 13

    • 3.1.20-0+deb13u1 · all · trixie

      Fixed · Fixed: 3.0.8-2

      usn · ruby-rack · debian · 13

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

      Fixed · Fixed: 3.0.8-2

      usn · ruby-rack · debian · 13

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

      Fixed · Fixed: 3.0.8-2

      usn · ruby-rack · debian · 13

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

      Fixed · Fixed: 3.0.8-2

      usn · ruby-rack · debian · 13

Observed:

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]