CVE-2026-33210
ruby-json: Ruby JSON is a JSON implementation for Ruby
CVE-2026-33210 is fixed in 34 products on 1 platform, first by DEBIAN-CVE-2026-33210, released March 20, 2026. It is not reported as exploited. Patch Radar priority: Urgent.
Urgent
CVSS
9.1
critical
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0089
59th percentile
Ruby JSON is a JSON implementation for Ruby. From version 2.14.0 to before versions 2.15.2.1, 2.17.1.2, and 2.19.2, a format string injection vulnerability can lead to denial of service attacks or information disclosure, when the allow_duplicate_key: false parsing option is used to parse user supplied documents. This issue has been patched in versions 2.15.2.1, 2.17.1.2, and 2.19.2.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| ruby · RHEL 9 | 0:4.0.3-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| ruby · almalinux 9 | 4.0.3-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| ruby · ol 9 | 0:4.0.3-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| ruby-bundled-gems · RHEL 9 | 0:4.0.3-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| ruby-bundled-gems · almalinux 9 | 4.0.3-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| ruby-bundled-gems · ol 9 | 0:4.0.3-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| ruby-default-gems · RHEL 9 | 0:4.0.3-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| ruby-default-gems · almalinux 9 | 4.0.3-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| ruby-default-gems · ol 9 | 0:4.0.3-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| ruby-devel · RHEL 9 | 0:4.0.3-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| ruby-devel · almalinux 9 | 4.0.3-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| ruby-devel · ol 9 | 0:4.0.3-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| ruby-doc · RHEL 9 | 0:4.0.3-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| ruby-doc · almalinux 9 | 4.0.3-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| ruby-doc · ol 9 | 0:4.0.3-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| ruby-json · Debian 14 | 2.19.2+dfsg-1 | DEBIAN-CVE-2026-33210 | Mar 20, 2026 |
| ruby-libs · RHEL 9 | 0:4.0.3-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| ruby-libs · almalinux 9 | 4.0.3-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| ruby-libs · ol 9 | 0:4.0.3-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| ruby4.0 · RHEL 10 | 4.0.3-34.el10_2 | RHSA-2026:20606 | Apr 24, 2026 |
| ruby4.0 · almalinux 10 | 4.0.3-34.el10_2 | ALSA-2026:20606 | May 26, 2026 |
| ruby4.0 · ol 10 | 0:4.0.3-35.el10_2 | ELSA-2026-20606 | Jul 17, 2026 |
| ruby4.0 · rocky 10 | 0:4.0.3-34.el10_2 | RLSA-2026:20606 | Jun 4, 2026 |
| ruby4.0-devel · almalinux 10 | 4.0.3-34.el10_2 | ALSA-2026:20606 | May 26, 2026 |
| ruby4.0-devel · ol 10 | 0:4.0.3-35.el10_2 | ELSA-2026-20606 | Jul 17, 2026 |
| ruby4.0-doc · almalinux 10 | 4.0.3-34.el10_2 | ALSA-2026:20606 | May 26, 2026 |
| ruby4.0-doc · ol 10 | 0:4.0.3-35.el10_2 | ELSA-2026-20606 | Jul 17, 2026 |
| ruby4.0-rubygem-mysql2 · almalinux 10 | 0.5.7-34.el10_2 | ALSA-2026:20606 | May 26, 2026 |
| ruby4.0-rubygem-mysql2 · ol 10 | 0:0.5.7-35.el10_2 | ELSA-2026-20606 | Jul 17, 2026 |
| ruby4.0-rubygem-pg · almalinux 10 | 1.6.3-34.el10_2 | ALSA-2026:20606 | May 26, 2026 |
| ruby4.0-rubygem-pg · ol 10 | 0:1.6.3-35.el10_2 | ELSA-2026-20606 | Jul 17, 2026 |
| rubygem-bigdecimal · RHEL 9 | 0:4.0.1-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-bigdecimal · almalinux 9 | 4.0.1-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygem-bigdecimal · ol 9 | 0:4.0.1-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-bundler · RHEL 9 | 0:4.0.6-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-bundler · almalinux 9 | 4.0.6-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygem-bundler · ol 9 | 0:4.0.6-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-io-console · RHEL 9 | 0:0.8.2-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-io-console · almalinux 9 | 0.8.2-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygem-io-console · ol 9 | 0:0.8.2-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-irb · RHEL 9 | 0:1.16.0-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-irb · almalinux 9 | 1.16.0-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygem-irb · ol 9 | 0:1.16.0-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-json · RHEL 9 | 0:2.18.0-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-json · almalinux 9 | 2.18.0-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygem-json · ol 9 | 0:2.18.0-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-minitest · RHEL 9 | 0:6.0.0-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-minitest · almalinux 9 | 6.0.0-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygem-minitest · ol 9 | 0:6.0.0-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-mysql2 · RHEL 9 | 0:0.5.7-1.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-mysql2 · almalinux 9 | 0.5.7-1.module_el9.8.0+232+50f6dd36 | ALSA-2026:20596 | May 26, 2026 |
| rubygem-mysql2 · ol 9 | 0:0.5.7-1.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-mysql2 · rocky 9 | 0:0.5.7-1.module+el9.8.0+40094+ce01217c | RLSA-2026:20596 | May 28, 2026 |
| rubygem-mysql2-doc · RHEL 9 | 0:0.5.7-1.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-mysql2-doc · almalinux 9 | 0.5.7-1.module_el9.8.0+232+50f6dd36 | ALSA-2026:20596 | May 26, 2026 |
| rubygem-mysql2-doc · ol 9 | 0:0.5.7-1.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-pg · RHEL 9 | 0:1.6.3-1.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-pg · almalinux 9 | 1.6.3-1.module_el9.8.0+232+50f6dd36 | ALSA-2026:20596 | May 26, 2026 |
| rubygem-pg · ol 9 | 0:1.6.3-1.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-pg · rocky 9 | 0:1.6.3-1.module+el9.8.0+40094+ce01217c | RLSA-2026:20596 | May 28, 2026 |
| rubygem-pg-doc · RHEL 9 | 0:1.6.3-1.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-pg-doc · almalinux 9 | 1.6.3-1.module_el9.8.0+232+50f6dd36 | ALSA-2026:20596 | May 26, 2026 |
| rubygem-pg-doc · ol 9 | 0:1.6.3-1.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-power_assert · RHEL 9 | 0:3.0.1-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-power_assert · almalinux 9 | 3.0.1-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygem-power_assert · ol 9 | 0:3.0.1-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-psych · RHEL 9 | 0:5.3.1-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-psych · almalinux 9 | 5.3.1-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygem-psych · ol 9 | 0:5.3.1-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-racc · RHEL 9 | 0:1.8.1-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-racc · almalinux 9 | 1.8.1-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygem-racc · ol 9 | 0:1.8.1-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-rake · RHEL 9 | 0:13.3.1-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-rake · almalinux 9 | 13.3.1-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygem-rake · ol 9 | 0:13.3.1-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-rbs · RHEL 9 | 0:3.10.0-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-rbs · almalinux 9 | 3.10.0-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygem-rbs · ol 9 | 0:3.10.0-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-rdoc · RHEL 9 | 0:7.0.3-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-rdoc · almalinux 9 | 7.0.3-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygem-rdoc · ol 9 | 0:7.0.3-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-rexml · RHEL 9 | 0:3.4.4-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-rexml · almalinux 9 | 3.4.4-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygem-rexml · ol 9 | 0:3.4.4-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-rss · RHEL 9 | 0:0.3.2-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-rss · almalinux 9 | 0.3.2-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygem-rss · ol 9 | 0:0.3.2-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-test-unit · RHEL 9 | 0:3.7.5-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-test-unit · almalinux 9 | 3.7.5-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygem-test-unit · ol 9 | 0:3.7.5-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygem-typeprof · RHEL 9 | 0:0.31.1-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygem-typeprof · almalinux 9 | 0.31.1-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygem-typeprof · ol 9 | 0:0.31.1-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygems · RHEL 9 | 0:4.0.6-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygems · almalinux 9 | 4.0.6-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygems · ol 9 | 0:4.0.6-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
| rubygems-devel · RHEL 9 | 0:4.0.6-32.module+el9.8.0+24280+122d8796 | RHSA-2026:20596 | May 27, 2026 |
| rubygems-devel · almalinux 9 | 4.0.6-32.module_el9.8.0+251+5fdbd96b | ALSA-2026:20596 | May 26, 2026 |
| rubygems-devel · ol 9 | 0:4.0.6-32.module+el9.8.0+90929+122d8796 | ELSA-2026-20596 | Jun 24, 2026 |
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