RHSA-2026:54391: Important: ruby security update

Published Aug 12, 2026
·
Updated

Important: ruby security update

Other sources

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.Security Fix(es): net-imap: Net::IMAP: Arbitrary IMAP command injection due to improper input validation (CVE-2026-47242) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

— Red Hat

Affected Software

105 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for x86_64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for Power, little endian - 4 years of support
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
redhat/ruby<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-bundled-gems<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-bundled-gems-debuginfo<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-debuginfo<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-debugsource<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-default-gems<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-devel<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-libs<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-libs-debuginfo<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/rubygem-bigdecimal<3.1.5-11.el10_0.3
3.1.5-11.el10_0.3
redhat/rubygem-bigdecimal-debuginfo<3.1.5-11.el10_0.3
3.1.5-11.el10_0.3
redhat/rubygem-bundler<2.5.22-11.el10_0.3
2.5.22-11.el10_0.3
redhat/rubygem-io-console<0.7.1-11.el10_0.3
0.7.1-11.el10_0.3
redhat/rubygem-io-console-debuginfo<0.7.1-11.el10_0.3
0.7.1-11.el10_0.3
redhat/rubygem-irb<1.13.1-11.el10_0.3
1.13.1-11.el10_0.3
redhat/rubygem-json<2.7.2-11.el10_0.3
2.7.2-11.el10_0.3
redhat/rubygem-json-debuginfo<2.7.2-11.el10_0.3
2.7.2-11.el10_0.3
redhat/rubygem-minitest<5.20.0-11.el10_0.3
5.20.0-11.el10_0.3
redhat/rubygem-psych<5.1.2-11.el10_0.3
5.1.2-11.el10_0.3
redhat/rubygem-psych-debuginfo<5.1.2-11.el10_0.3
5.1.2-11.el10_0.3
redhat/rubygem-racc<1.7.3-11.el10_0.3
1.7.3-11.el10_0.3
redhat/rubygem-racc-debuginfo<1.7.3-11.el10_0.3
1.7.3-11.el10_0.3
redhat/rubygem-rake<13.1.0-11.el10_0.3
13.1.0-11.el10_0.3
redhat/rubygem-rbs<3.4.0-11.el10_0.3
3.4.0-11.el10_0.3
redhat/rubygem-rbs-debuginfo<3.4.0-11.el10_0.3
3.4.0-11.el10_0.3
redhat/rubygem-rdoc<6.6.3.1-11.el10_0.3
6.6.3.1-11.el10_0.3
redhat/rubygem-rexml<3.4.4-11.el10_0.3
3.4.4-11.el10_0.3
redhat/rubygem-rss<0.3.1-11.el10_0.3
0.3.1-11.el10_0.3
redhat/rubygem-test-unit<3.6.1-11.el10_0.3
3.6.1-11.el10_0.3
redhat/rubygem-typeprof<0.21.9-11.el10_0.3
0.21.9-11.el10_0.3
redhat/rubygems<3.5.22-11.el10_0.3
3.5.22-11.el10_0.3
redhat/rubygems-devel<3.5.22-11.el10_0.3
3.5.22-11.el10_0.3
redhat/ruby-bundled-gems<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-bundled-gems-debuginfo<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-debuginfo<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-debugsource<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-devel<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-libs<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-libs-debuginfo<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/rubygem-bigdecimal<3.1.5-11.el10_0.3
3.1.5-11.el10_0.3
redhat/rubygem-bigdecimal-debuginfo<3.1.5-11.el10_0.3
3.1.5-11.el10_0.3
redhat/rubygem-io-console<0.7.1-11.el10_0.3
0.7.1-11.el10_0.3
redhat/rubygem-io-console-debuginfo<0.7.1-11.el10_0.3
0.7.1-11.el10_0.3
redhat/rubygem-json<2.7.2-11.el10_0.3
2.7.2-11.el10_0.3
redhat/rubygem-json-debuginfo<2.7.2-11.el10_0.3
2.7.2-11.el10_0.3
redhat/rubygem-psych<5.1.2-11.el10_0.3
5.1.2-11.el10_0.3
redhat/rubygem-psych-debuginfo<5.1.2-11.el10_0.3
5.1.2-11.el10_0.3
redhat/rubygem-racc<1.7.3-11.el10_0.3
1.7.3-11.el10_0.3
redhat/rubygem-racc-debuginfo<1.7.3-11.el10_0.3
1.7.3-11.el10_0.3
redhat/rubygem-rbs<3.4.0-11.el10_0.3
3.4.0-11.el10_0.3
redhat/rubygem-rbs-debuginfo<3.4.0-11.el10_0.3
3.4.0-11.el10_0.3
redhat/ruby<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-bundled-gems<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-bundled-gems-debuginfo<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-debuginfo<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-debugsource<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-devel<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-libs<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/ruby-libs-debuginfo<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3
redhat/rubygem-bigdecimal<3.1.5-11.el10_0.3
3.1.5-11.el10_0.3
redhat/rubygem-bigdecimal-debuginfo<3.1.5-11.el10_0.3
3.1.5-11.el10_0.3
redhat/rubygem-io-console<0.7.1-11.el10_0.3
0.7.1-11.el10_0.3
redhat/rubygem-io-console-debuginfo<0.7.1-11.el10_0.3
0.7.1-11.el10_0.3
redhat/rubygem-json<2.7.2-11.el10_0.3
2.7.2-11.el10_0.3
redhat/rubygem-json-debuginfo<2.7.2-11.el10_0.3
2.7.2-11.el10_0.3
redhat/rubygem-psych<5.1.2-11.el10_0.3
5.1.2-11.el10_0.3
redhat/rubygem-psych-debuginfo<5.1.2-11.el10_0.3
5.1.2-11.el10_0.3
redhat/rubygem-racc<1.7.3-11.el10_0.3
1.7.3-11.el10_0.3
redhat/rubygem-racc-debuginfo<1.7.3-11.el10_0.3
1.7.3-11.el10_0.3
redhat/rubygem-rbs<3.4.0-11.el10_0.3
3.4.0-11.el10_0.3
redhat/rubygem-rbs-debuginfo<3.4.0-11.el10_0.3
3.4.0-11.el10_0.3
redhat/ruby<3.3.12-11.el10_0.3.aa
3.3.12-11.el10_0.3.aa
redhat/ruby-bundled-gems<3.3.12-11.el10_0.3.aa
3.3.12-11.el10_0.3.aa
redhat/ruby-bundled-gems-debuginfo<3.3.12-11.el10_0.3.aa
3.3.12-11.el10_0.3.aa
redhat/ruby-debuginfo<3.3.12-11.el10_0.3.aa
3.3.12-11.el10_0.3.aa
redhat/ruby-debugsource<3.3.12-11.el10_0.3.aa
3.3.12-11.el10_0.3.aa
redhat/ruby-devel<3.3.12-11.el10_0.3.aa
3.3.12-11.el10_0.3.aa
redhat/ruby-libs<3.3.12-11.el10_0.3.aa
3.3.12-11.el10_0.3.aa
redhat/ruby-libs-debuginfo<3.3.12-11.el10_0.3.aa
3.3.12-11.el10_0.3.aa
redhat/rubygem-bigdecimal<3.1.5-11.el10_0.3.aa
3.1.5-11.el10_0.3.aa
redhat/rubygem-bigdecimal-debuginfo<3.1.5-11.el10_0.3.aa
3.1.5-11.el10_0.3.aa
redhat/rubygem-io-console<0.7.1-11.el10_0.3.aa
0.7.1-11.el10_0.3.aa
redhat/rubygem-io-console-debuginfo<0.7.1-11.el10_0.3.aa
0.7.1-11.el10_0.3.aa
redhat/rubygem-json<2.7.2-11.el10_0.3.aa
2.7.2-11.el10_0.3.aa
redhat/rubygem-json-debuginfo<2.7.2-11.el10_0.3.aa
2.7.2-11.el10_0.3.aa
redhat/rubygem-psych<5.1.2-11.el10_0.3.aa
5.1.2-11.el10_0.3.aa
redhat/rubygem-psych-debuginfo<5.1.2-11.el10_0.3.aa
5.1.2-11.el10_0.3.aa
redhat/rubygem-racc<1.7.3-11.el10_0.3.aa
1.7.3-11.el10_0.3.aa
redhat/rubygem-racc-debuginfo<1.7.3-11.el10_0.3.aa
1.7.3-11.el10_0.3.aa
redhat/rubygem-rbs<3.4.0-11.el10_0.3.aa
3.4.0-11.el10_0.3.aa
redhat/rubygem-rbs-debuginfo<3.4.0-11.el10_0.3.aa
3.4.0-11.el10_0.3.aa
redhat/ruby-doc<3.3.12-11.el10_0.3
3.3.12-11.el10_0.3

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/ruby to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3
  2. Upgrade

    Upgrade redhat/ruby-bundled-gems to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3
  3. Upgrade

    Upgrade redhat/ruby-bundled-gems-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3
  4. Upgrade

    Upgrade redhat/ruby-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3
  5. Upgrade

    Upgrade redhat/ruby-debugsource to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3
  6. Upgrade

    Upgrade redhat/ruby-default-gems to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3
  7. Upgrade

    Upgrade redhat/ruby-devel to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3
  8. Upgrade

    Upgrade redhat/ruby-libs to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3
  9. Upgrade

    Upgrade redhat/ruby-libs-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3
  10. Upgrade

    Upgrade redhat/rubygem-bigdecimal to a version that resolves this vulnerability.

    Fixed in 3.1.5-11.el10_0.3
  11. Upgrade

    Upgrade redhat/rubygem-bigdecimal-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.1.5-11.el10_0.3
  12. Upgrade

    Upgrade redhat/rubygem-bundler to a version that resolves this vulnerability.

    Fixed in 2.5.22-11.el10_0.3
  13. Upgrade

    Upgrade redhat/rubygem-io-console to a version that resolves this vulnerability.

    Fixed in 0.7.1-11.el10_0.3
  14. Upgrade

    Upgrade redhat/rubygem-io-console-debuginfo to a version that resolves this vulnerability.

    Fixed in 0.7.1-11.el10_0.3
  15. Upgrade

    Upgrade redhat/rubygem-irb to a version that resolves this vulnerability.

    Fixed in 1.13.1-11.el10_0.3
  16. Upgrade

    Upgrade redhat/rubygem-json to a version that resolves this vulnerability.

    Fixed in 2.7.2-11.el10_0.3
  17. Upgrade

    Upgrade redhat/rubygem-json-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.7.2-11.el10_0.3
  18. Upgrade

    Upgrade redhat/rubygem-minitest to a version that resolves this vulnerability.

    Fixed in 5.20.0-11.el10_0.3
  19. Upgrade

    Upgrade redhat/rubygem-psych to a version that resolves this vulnerability.

    Fixed in 5.1.2-11.el10_0.3
  20. Upgrade

    Upgrade redhat/rubygem-psych-debuginfo to a version that resolves this vulnerability.

    Fixed in 5.1.2-11.el10_0.3
  21. Upgrade

    Upgrade redhat/rubygem-racc to a version that resolves this vulnerability.

    Fixed in 1.7.3-11.el10_0.3
  22. Upgrade

    Upgrade redhat/rubygem-racc-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.7.3-11.el10_0.3
  23. Upgrade

    Upgrade redhat/rubygem-rake to a version that resolves this vulnerability.

    Fixed in 13.1.0-11.el10_0.3
  24. Upgrade

    Upgrade redhat/rubygem-rbs to a version that resolves this vulnerability.

    Fixed in 3.4.0-11.el10_0.3
  25. Upgrade

    Upgrade redhat/rubygem-rbs-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.4.0-11.el10_0.3
  26. Upgrade

    Upgrade redhat/rubygem-rdoc to a version that resolves this vulnerability.

    Fixed in 6.6.3.1-11.el10_0.3
  27. Upgrade

    Upgrade redhat/rubygem-rexml to a version that resolves this vulnerability.

    Fixed in 3.4.4-11.el10_0.3
  28. Upgrade

    Upgrade redhat/rubygem-rss to a version that resolves this vulnerability.

    Fixed in 0.3.1-11.el10_0.3
  29. Upgrade

    Upgrade redhat/rubygem-test-unit to a version that resolves this vulnerability.

    Fixed in 3.6.1-11.el10_0.3
  30. Upgrade

    Upgrade redhat/rubygem-typeprof to a version that resolves this vulnerability.

    Fixed in 0.21.9-11.el10_0.3
  31. Upgrade

    Upgrade redhat/rubygems to a version that resolves this vulnerability.

    Fixed in 3.5.22-11.el10_0.3
  32. Upgrade

    Upgrade redhat/rubygems-devel to a version that resolves this vulnerability.

    Fixed in 3.5.22-11.el10_0.3
  33. Upgrade

    Upgrade redhat/ruby to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3.aa
  34. Upgrade

    Upgrade redhat/ruby-bundled-gems to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3.aa
  35. Upgrade

    Upgrade redhat/ruby-bundled-gems-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3.aa
  36. Upgrade

    Upgrade redhat/ruby-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3.aa
  37. Upgrade

    Upgrade redhat/ruby-debugsource to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3.aa
  38. Upgrade

    Upgrade redhat/ruby-devel to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3.aa
  39. Upgrade

    Upgrade redhat/ruby-libs to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3.aa
  40. Upgrade

    Upgrade redhat/ruby-libs-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3.aa
  41. Upgrade

    Upgrade redhat/rubygem-bigdecimal to a version that resolves this vulnerability.

    Fixed in 3.1.5-11.el10_0.3.aa
  42. Upgrade

    Upgrade redhat/rubygem-bigdecimal-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.1.5-11.el10_0.3.aa
  43. Upgrade

    Upgrade redhat/rubygem-io-console to a version that resolves this vulnerability.

    Fixed in 0.7.1-11.el10_0.3.aa
  44. Upgrade

    Upgrade redhat/rubygem-io-console-debuginfo to a version that resolves this vulnerability.

    Fixed in 0.7.1-11.el10_0.3.aa
  45. Upgrade

    Upgrade redhat/rubygem-json to a version that resolves this vulnerability.

    Fixed in 2.7.2-11.el10_0.3.aa
  46. Upgrade

    Upgrade redhat/rubygem-json-debuginfo to a version that resolves this vulnerability.

    Fixed in 2.7.2-11.el10_0.3.aa
  47. Upgrade

    Upgrade redhat/rubygem-psych to a version that resolves this vulnerability.

    Fixed in 5.1.2-11.el10_0.3.aa
  48. Upgrade

    Upgrade redhat/rubygem-psych-debuginfo to a version that resolves this vulnerability.

    Fixed in 5.1.2-11.el10_0.3.aa
  49. Upgrade

    Upgrade redhat/rubygem-racc to a version that resolves this vulnerability.

    Fixed in 1.7.3-11.el10_0.3.aa
  50. Upgrade

    Upgrade redhat/rubygem-racc-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.7.3-11.el10_0.3.aa
  51. Upgrade

    Upgrade redhat/rubygem-rbs to a version that resolves this vulnerability.

    Fixed in 3.4.0-11.el10_0.3.aa
  52. Upgrade

    Upgrade redhat/rubygem-rbs-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.4.0-11.el10_0.3.aa
  53. Upgrade

    Upgrade redhat/ruby-doc to a version that resolves this vulnerability.

    Fixed in 3.3.12-11.el10_0.3

Event History

Aug 12, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·02:23 PM
Data Sourced
via Red Hat·02:23 PM
Severity
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Frequently Asked Questions

1

What is the severity of RHSA-2026:54391?

The severity of RHSA-2026:54391 is classified as high with a score of 7.

2

How do I fix RHSA-2026:54391?

To fix RHSA-2026:54391, update your Ruby packages to the latest version provided by Red Hat.

3

What vulnerability is addressed in RHSA-2026:54391?

RHSA-2026:54391 addresses an arbitrary IMAP command injection vulnerability due to improper input validation (CVE-2026-472).

4

Which software packages are affected by RHSA-2026:54391?

The affected software packages include redhat/ruby, redhat/ruby-bundled-gems, and several associated debug libraries.

5

What are the main risks associated with RHSA-2026:54391?

The main risks include potential exploitation of the arbitrary IMAP command injection vulnerability leading to unauthorized access or control.

Company

Resources

Contact

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