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CVE-2025-27220

CVE-2025-27220

This page contains facts from public vulnerability sources. Check the original advisory before updating.

In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists in the Util#escapeElement method.

CVSS 4.0 · Medium · EPSS 0.8% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • cgi

    Versions
    • ≥ 0, < 0.3.5.1: Affected (custom)
    • ≥ 0.3.6, < 0.3.7: Affected (custom)
    • ≥ 0.4.0, < 0.4.2: Affected (custom)

    Update to 0.3.5.1; Update to 0.3.7; Update to 0.4.2

  • ruby3.1 Debian:12

    Versions
    • 3.1.2-7
    • 3.1.2-7+deb12u1
    • 3.1.2-7+hurd.1
    • 3.1.2-8
    • 3.1.2-8.1~exp1
    • 3.1.2-8.3
    • 3.1.2-8.4
    • 3.1.2-8.5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ruby3.3 Debian:13

    Affected ranges
    • ECOSYSTEM: < 3.3.7-2

    Update to 3.3.7-2

  • ruby3.3 Debian:14

    Affected ranges
    • ECOSYSTEM: < 3.3.7-2

    Update to 3.3.7-2

  • jruby Ubuntu:Pro:14.04:LTS

    Versions
    • 1.5.6-5ubuntu1
    • 1.5.6-6
    • 1.5.6-7
    • 1.5.6-9+deb8u2build0.14.04.1~esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ruby2.3 Ubuntu:Pro:16.04:LTS

    Versions
    • 2.3.0-1
    • 2.3.0-2
    • 2.3.0-4ubuntu2
    • 2.3.0-4ubuntu3
    • 2.3.0-5ubuntu1
    • 2.3.1-2~16.04
    • 2.3.1-2~16.04.2
    • 2.3.1-2~16.04.4
    • 2.3.1-2~16.04.5
    • 2.3.1-2~16.04.6
    • 2.3.1-2~16.04.7
    • 2.3.1-2~16.04.9
    • 2.3.1-2~16.04.10
    • 2.3.1-2~16.04.11
    • 2.3.1-2~16.04.12
    • 2.3.1-2~ubuntu16.04.13
    • 2.3.1-2~ubuntu16.04.14
    • 2.3.1-2~ubuntu16.04.15
    • 2.3.1-2~ubuntu16.04.16
    • 2.3.1-2~ubuntu16.04.16+esm1
    • 2.3.1-2~ubuntu16.04.16+esm2
    • 2.3.1-2~ubuntu16.04.16+esm3
    • 2.3.1-2~ubuntu16.04.16+esm4
    • 2.3.1-2~ubuntu16.04.16+esm5
    • 2.3.1-2~ubuntu16.04.16+esm6
    • 2.3.1-2~ubuntu16.04.16+esm7
    • 2.3.1-2~ubuntu16.04.16+esm8
    • 2.3.1-2~ubuntu16.04.16+esm9
    Affected ranges
    • ECOSYSTEM: < 2.3.1-2~ubuntu16.04.16+esm10

    Update to 2.3.1-2~ubuntu16.04.16+esm10

  • jruby Ubuntu:16.04:LTS

    Versions
    • 1.7.21-2ubuntu4
    • 1.7.22-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ruby2.5 Ubuntu:Pro:18.04:LTS

    Versions
    • 2.5.0~preview1-1ubuntu2
    • 2.5.0-4ubuntu1
    • 2.5.0-4ubuntu4
    • 2.5.0-5ubuntu1
    • 2.5.0-6ubuntu1
    • 2.5.1-1ubuntu1
    • 2.5.1-1ubuntu1.1
    • 2.5.1-1ubuntu1.2
    • 2.5.1-1ubuntu1.4
    • 2.5.1-1ubuntu1.5
    • 2.5.1-1ubuntu1.6
    • 2.5.1-1ubuntu1.7
    • 2.5.1-1ubuntu1.8
    • 2.5.1-1ubuntu1.9
    • 2.5.1-1ubuntu1.10
    • 2.5.1-1ubuntu1.11
    • 2.5.1-1ubuntu1.12
    • 2.5.1-1ubuntu1.13
    • 2.5.1-1ubuntu1.14
    • 2.5.1-1ubuntu1.15
    • 2.5.1-1ubuntu1.16
    • 2.5.1-1ubuntu1.16+esm1
    • 2.5.1-1ubuntu1.16+esm3
    Affected ranges
    • ECOSYSTEM: < 2.5.1-1ubuntu1.16+esm4

    Update to 2.5.1-1ubuntu1.16+esm4

  • jruby Ubuntu:18.04:LTS

    Versions
    • 9.1.13.0-1
    • 9.1.17.0-1~18.04
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ruby2.7 Ubuntu:20.04:LTS

    Versions
    • 2.7.0-1
    • 2.7.0-2
    • 2.7.0-3
    • 2.7.0-4
    • 2.7.0-4ubuntu1
    • 2.7.0-5ubuntu1
    • 2.7.0-5ubuntu1.1
    • 2.7.0-5ubuntu1.2
    • 2.7.0-5ubuntu1.3
    • 2.7.0-5ubuntu1.4
    • 2.7.0-5ubuntu1.5
    • 2.7.0-5ubuntu1.6
    • 2.7.0-5ubuntu1.7
    • 2.7.0-5ubuntu1.8
    • 2.7.0-5ubuntu1.9
    • 2.7.0-5ubuntu1.10
    • 2.7.0-5ubuntu1.11
    • 2.7.0-5ubuntu1.12
    • 2.7.0-5ubuntu1.13
    • 2.7.0-5ubuntu1.14
    • 2.7.0-5ubuntu1.15
    • 2.7.0-5ubuntu1.16
    • 2.7.0-5ubuntu1.17
    Affected ranges
    • ECOSYSTEM: < 2.7.0-5ubuntu1.18

    Update to 2.7.0-5ubuntu1.18

  • jruby Ubuntu:20.04:LTS

    Versions
    • 9.1.17.0-3
    • 9.1.17.0-3build5
    • 9.1.17.0-3build6
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ruby3.0 Ubuntu:22.04:LTS

    Versions
    • 3.0.2-5ubuntu1
    • 3.0.2-7
    • 3.0.2-7ubuntu2
    • 3.0.2-7ubuntu2.1
    • 3.0.2-7ubuntu2.2
    • 3.0.2-7ubuntu2.3
    • 3.0.2-7ubuntu2.4
    • 3.0.2-7ubuntu2.5
    • 3.0.2-7ubuntu2.6
    • 3.0.2-7ubuntu2.7
    • 3.0.2-7ubuntu2.8
    Affected ranges
    • ECOSYSTEM: < 3.0.2-7ubuntu2.10

    Update to 3.0.2-7ubuntu2.10

  • jruby Ubuntu:24.04:LTS

    Versions
    • 9.3.9.0+ds-1
    • 9.4.5.0+ds-1
    • 9.4.5.0+ds-1ubuntu1
    • 9.4.6.0+ds-1ubuntu3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ruby3.2 Ubuntu:24.04:LTS

    Versions
    • 3.2.3-1
    • 3.2.3-1build2
    • 3.2.3-1build3
    • 3.2.3-1ubuntu0.24.04.1
    • 3.2.3-1ubuntu0.24.04.3
    Affected ranges
    • ECOSYSTEM: < 3.2.3-1ubuntu0.24.04.5

    Update to 3.2.3-1ubuntu0.24.04.5

  • jruby Ubuntu:25.10

    Versions
    • 9.4.8.0+ds-2ubuntu1
    • 9.4.8.0+ds-3ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ruby3.3 Ubuntu:25.10

    Affected ranges
    • ECOSYSTEM: < 3.3.7-1ubuntu2

    Update to 3.3.7-1ubuntu2

  • jruby Ubuntu:26.10

    Versions
    • 9.4.8.0+ds-3ubuntu1
    • 9.4.14.0+ds-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • jruby Ubuntu:26.04:LTS

    Versions
    • 9.4.8.0+ds-3ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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