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High ELSA-2026-18030 1 CVE

Important: ruby:3.3 security update (Oracle Linux 9)

Published May 19, 2026 · Updated May 19, 2026

Summary

ruby
[3.3.10-6]
- Fix arbitrary code execution via deserialization bypass in ERB. (CVE-2026-41316)
Resolves: RHEL-171255

[3.3.10-5]
- Upgrade to Ruby 3.3.10.
Resolves: RHEL-127912
- Fix possible denial of service in resolv gem (CVE-2025-24294)
- Fix URI Credential Leakage Bypass previous fixes. (CVE-2025-61594)
- Fix REXML denial of service. (CVE-2025-58767)
Resolves: RHEL-122015

[3.3.8-4]
- Upgrade to Ruby 3.3.8.
Resolves: RHEL-68631
- Fix Net::IMAP vulnerable to possible DoS by memory exhaustion. (CVE-2025-25186)
- Fix Denial of Service in CGI::Cookie.parse. (CVE-2025-27219)
Resolves: RHEL-86109
- Fix userinfo leakage in URI#join, URI#merge and URI#+. (CVE-2025-27221)

[3.3.5-3]
- Upgrade to Ruby 3.3.5
Resolves: RHEL-55411
- Fix DoS vulnerability in rexml.
(CVE-2024-39908)
(CVE-2024-41946)
(CVE-2024-43398)
Resolves: RHEL-57575
Resolves: RHEL-57572
Resolves: RHEL-57068
- Fix REXML DoS when parsing an XML having many specific characters such as
whitespace character, >] and ]>.
(CVE-2024-41123)
Resolves: RHEL-57569
- Fix incorrect symlink for rubygem-irb's library.
Resolves: RHEL-42646

[3.3.1-2]
- Upgrade to Ruby 3.3.1.
Resolves: RHEL-33976
- Fix buffer overread vulnerability in StringIO.
(CVE-2024-27280)
Resolves: RHEL-34130
- Fix RCE vulnerability with .rdoc_options in RDoc.
(CVE-2024-27281)
Resolves: RHEL-34122
- Fix Arbitrary memory address read vulnerability with Regex search.
(CVE-2024-27282)
Resolves: RHEL-33872

rubygem-mysql2
[0.5.5-3]
- Disable tests on the 32bit platforms ix86.
Related: RHEL-80222

[0.5.5-2]
- Adapt tests to openssl 3.2
Resolves: RHEL-80222

[0.5.5-1]
- Upgrade to mysql2 0.5.5.
Related: RHEL-17089

rubygem-pg
[-1.5.4-2]
- Fix encoding issue in spec suite.
Resolves: RHEL-159200

Fixed packages 28

ReleasePackageFixed in
Oracle Linux · 9 ruby 0:3.3.10-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 ruby-bundled-gems 0:3.3.10-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 ruby-default-gems 0:3.3.10-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 ruby-devel 0:3.3.10-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 ruby-doc 0:3.3.10-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 ruby-libs 0:3.3.10-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-bigdecimal 0:3.1.5-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-bundler 0:2.5.22-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-io-console 0:0.7.1-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-irb 0:1.13.1-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-json 0:2.7.2-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-minitest 0:5.20.0-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-mysql2 0:0.5.5-3.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-mysql2-doc 0:0.5.5-3.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-pg 0:1.5.4-2.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-pg-doc 0:1.5.4-2.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-power_assert 0:2.0.3-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-psych 0:5.1.2-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-racc 0:1.7.3-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-rake 0:13.1.0-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-rbs 0:3.4.0-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-rdoc 0:6.6.3.1-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-rexml 0:3.4.4-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-rss 0:0.3.1-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-test-unit 0:3.6.1-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygem-typeprof 0:0.21.9-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygems 0:3.5.22-6.module+el9.7.0+90894+66578cbb
Oracle Linux · 9 rubygems-devel 0:3.5.22-6.module+el9.7.0+90894+66578cbb

Vulnerabilities 1

  • High 8.1

    ERB has an @_init deserialization guard bypass via def_module / def_method / def_class

    ERB is a templating system for Ruby. Ruby 2.7.0 (before ERB 2.2.0 was published on rubygems.org) introduced an `@_init` instance variable guard in `ERB#result` and `ERB#run` to prevent code execution when an ERB object is reconstructed via `Marshal.load` (des…