# ELSA-2026-33565: Security update for 24 packages

ELSA-2026-33565, released July 16, 2026, fixes 3 CVEs across 24 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/elsa-2026-33565
- Platform: Linux
- Released: Jul 16, 2026
- Priority: High (Closes CVE-2026-42258, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2026-33565.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [ruby](https://patchblox.com/security/data/product/linux/ruby.md) | ol 10 | 0:3.3.10-13.el10_2 |
| [ruby-bundled-gems](https://patchblox.com/security/data/product/linux/ruby-bundled-gems.md) | ol 10 | 0:3.3.10-13.el10_2 |
| [ruby-default-gems](https://patchblox.com/security/data/product/linux/ruby-default-gems.md) | ol 10 | 0:3.3.10-13.el10_2 |
| [ruby-devel](https://patchblox.com/security/data/product/linux/ruby-devel.md) | ol 10 | 0:3.3.10-13.el10_2 |
| [ruby-doc](https://patchblox.com/security/data/product/linux/ruby-doc.md) | ol 10 | 0:3.3.10-13.el10_2 |
| [ruby-libs](https://patchblox.com/security/data/product/linux/ruby-libs.md) | ol 10 | 0:3.3.10-13.el10_2 |
| [rubygem-bigdecimal](https://patchblox.com/security/data/product/linux/rubygem-bigdecimal.md) | ol 10 | 0:3.1.5-13.el10_2 |
| [rubygem-bundler](https://patchblox.com/security/data/product/linux/rubygem-bundler.md) | ol 10 | 0:2.5.22-13.el10_2 |
| [rubygem-io-console](https://patchblox.com/security/data/product/linux/rubygem-io-console.md) | ol 10 | 0:0.7.1-13.el10_2 |
| [rubygem-irb](https://patchblox.com/security/data/product/linux/rubygem-irb.md) | ol 10 | 0:1.13.1-13.el10_2 |
| [rubygem-json](https://patchblox.com/security/data/product/linux/rubygem-json.md) | ol 10 | 0:2.7.2-13.el10_2 |
| [rubygem-minitest](https://patchblox.com/security/data/product/linux/rubygem-minitest.md) | ol 10 | 0:5.20.0-13.el10_2 |
| [rubygem-power_assert](https://patchblox.com/security/data/product/linux/rubygem-power-assert.md) | ol 10 | 0:2.0.3-13.el10_2 |
| [rubygem-psych](https://patchblox.com/security/data/product/linux/rubygem-psych.md) | ol 10 | 0:5.1.2-13.el10_2 |
| [rubygem-racc](https://patchblox.com/security/data/product/linux/rubygem-racc.md) | ol 10 | 0:1.7.3-13.el10_2 |
| [rubygem-rake](https://patchblox.com/security/data/product/linux/rubygem-rake.md) | ol 10 | 0:13.1.0-13.el10_2 |
| [rubygem-rbs](https://patchblox.com/security/data/product/linux/rubygem-rbs.md) | ol 10 | 0:3.4.0-13.el10_2 |
| [rubygem-rdoc](https://patchblox.com/security/data/product/linux/rubygem-rdoc.md) | ol 10 | 0:6.6.3.1-13.el10_2 |
| [rubygem-rexml](https://patchblox.com/security/data/product/linux/rubygem-rexml.md) | ol 10 | 0:3.4.4-13.el10_2 |
| [rubygem-rss](https://patchblox.com/security/data/product/linux/rubygem-rss.md) | ol 10 | 0:0.3.1-13.el10_2 |
| [rubygem-test-unit](https://patchblox.com/security/data/product/linux/rubygem-test-unit.md) | ol 10 | 0:3.6.1-13.el10_2 |
| [rubygem-typeprof](https://patchblox.com/security/data/product/linux/rubygem-typeprof.md) | ol 10 | 0:0.21.9-13.el10_2 |
| [rubygems](https://patchblox.com/security/data/product/linux/rubygems.md) | ol 10 | 0:3.5.22-13.el10_2 |
| [rubygems-devel](https://patchblox.com/security/data/product/linux/rubygems-devel.md) | ol 10 | 0:3.5.22-13.el10_2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-42258](https://patchblox.com/security/data/cve/CVE-2026-42258.md) | High | net-imap: Command Injection via unvalidated Symbol inputs | 7.4 | 0.0078 |  |
| [CVE-2026-42245](https://patchblox.com/security/data/cve/CVE-2026-42245.md) | High | ruby4.0: Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby | 7.4 | 0.0041 |  |
| [CVE-2026-42246](https://patchblox.com/security/data/cve/CVE-2026-42246.md) | High | net-imap vulnerable to STARTTLS stripping via invalid response timing | 7.4 | 0.0031 |  |

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Data as of 2026-11-07T12:40:37Z 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