# ELSA-2026-20596: Security update for 28 packages

ELSA-2026-20596, released June 24, 2026, fixes 1 CVE across 28 products. None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/elsa-2026-20596
- Platform: Linux
- Released: Jun 24, 2026
- Priority: Urgent (Closes CVE-2026-33210, rated Critical)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2026-20596.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [ruby](https://patchblox.com/security/data/product/linux/ruby.md) | ol 9 | 0:4.0.3-32.module+el9.8.0+90929+122d8796 |
| [ruby-bundled-gems](https://patchblox.com/security/data/product/linux/ruby-bundled-gems.md) | ol 9 | 0:4.0.3-32.module+el9.8.0+90929+122d8796 |
| [ruby-default-gems](https://patchblox.com/security/data/product/linux/ruby-default-gems.md) | ol 9 | 0:4.0.3-32.module+el9.8.0+90929+122d8796 |
| [ruby-devel](https://patchblox.com/security/data/product/linux/ruby-devel.md) | ol 9 | 0:4.0.3-32.module+el9.8.0+90929+122d8796 |
| [ruby-doc](https://patchblox.com/security/data/product/linux/ruby-doc.md) | ol 9 | 0:4.0.3-32.module+el9.8.0+90929+122d8796 |
| [ruby-libs](https://patchblox.com/security/data/product/linux/ruby-libs.md) | ol 9 | 0:4.0.3-32.module+el9.8.0+90929+122d8796 |
| [rubygem-bigdecimal](https://patchblox.com/security/data/product/linux/rubygem-bigdecimal.md) | ol 9 | 0:4.0.1-32.module+el9.8.0+90929+122d8796 |
| [rubygem-bundler](https://patchblox.com/security/data/product/linux/rubygem-bundler.md) | ol 9 | 0:4.0.6-32.module+el9.8.0+90929+122d8796 |
| [rubygem-io-console](https://patchblox.com/security/data/product/linux/rubygem-io-console.md) | ol 9 | 0:0.8.2-32.module+el9.8.0+90929+122d8796 |
| [rubygem-irb](https://patchblox.com/security/data/product/linux/rubygem-irb.md) | ol 9 | 0:1.16.0-32.module+el9.8.0+90929+122d8796 |
| [rubygem-json](https://patchblox.com/security/data/product/linux/rubygem-json.md) | ol 9 | 0:2.18.0-32.module+el9.8.0+90929+122d8796 |
| [rubygem-minitest](https://patchblox.com/security/data/product/linux/rubygem-minitest.md) | ol 9 | 0:6.0.0-32.module+el9.8.0+90929+122d8796 |
| [rubygem-mysql2](https://patchblox.com/security/data/product/linux/rubygem-mysql2.md) | ol 9 | 0:0.5.7-1.module+el9.8.0+90929+122d8796 |
| [rubygem-mysql2-doc](https://patchblox.com/security/data/product/linux/rubygem-mysql2-doc.md) | ol 9 | 0:0.5.7-1.module+el9.8.0+90929+122d8796 |
| [rubygem-pg](https://patchblox.com/security/data/product/linux/rubygem-pg.md) | ol 9 | 0:1.6.3-1.module+el9.8.0+90929+122d8796 |
| [rubygem-pg-doc](https://patchblox.com/security/data/product/linux/rubygem-pg-doc.md) | ol 9 | 0:1.6.3-1.module+el9.8.0+90929+122d8796 |
| [rubygem-power_assert](https://patchblox.com/security/data/product/linux/rubygem-power-assert.md) | ol 9 | 0:3.0.1-32.module+el9.8.0+90929+122d8796 |
| [rubygem-psych](https://patchblox.com/security/data/product/linux/rubygem-psych.md) | ol 9 | 0:5.3.1-32.module+el9.8.0+90929+122d8796 |
| [rubygem-racc](https://patchblox.com/security/data/product/linux/rubygem-racc.md) | ol 9 | 0:1.8.1-32.module+el9.8.0+90929+122d8796 |
| [rubygem-rake](https://patchblox.com/security/data/product/linux/rubygem-rake.md) | ol 9 | 0:13.3.1-32.module+el9.8.0+90929+122d8796 |
| [rubygem-rbs](https://patchblox.com/security/data/product/linux/rubygem-rbs.md) | ol 9 | 0:3.10.0-32.module+el9.8.0+90929+122d8796 |
| [rubygem-rdoc](https://patchblox.com/security/data/product/linux/rubygem-rdoc.md) | ol 9 | 0:7.0.3-32.module+el9.8.0+90929+122d8796 |
| [rubygem-rexml](https://patchblox.com/security/data/product/linux/rubygem-rexml.md) | ol 9 | 0:3.4.4-32.module+el9.8.0+90929+122d8796 |
| [rubygem-rss](https://patchblox.com/security/data/product/linux/rubygem-rss.md) | ol 9 | 0:0.3.2-32.module+el9.8.0+90929+122d8796 |
| [rubygem-test-unit](https://patchblox.com/security/data/product/linux/rubygem-test-unit.md) | ol 9 | 0:3.7.5-32.module+el9.8.0+90929+122d8796 |
| [rubygem-typeprof](https://patchblox.com/security/data/product/linux/rubygem-typeprof.md) | ol 9 | 0:0.31.1-32.module+el9.8.0+90929+122d8796 |
| [rubygems](https://patchblox.com/security/data/product/linux/rubygems.md) | ol 9 | 0:4.0.6-32.module+el9.8.0+90929+122d8796 |
| [rubygems-devel](https://patchblox.com/security/data/product/linux/rubygems-devel.md) | ol 9 | 0:4.0.6-32.module+el9.8.0+90929+122d8796 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-33210](https://patchblox.com/security/data/cve/CVE-2026-33210.md) | Urgent | ruby-json: Ruby JSON is a JSON implementation for Ruby | 9.1 | 0.0089 |  |

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Data as of 2026-11-07T06:34:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo