# RHSA-2026:50828: Security update for 28 packages RHSA-2026:50828, released August 28, 2026, fixes 6 CVEs across 28 products. None of them is reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/fix/linux/rhsa-2026-50828 - Platform: Linux - Released: Aug 28, 2026 - Priority: High (Closes CVE-2026-47240, high severity) - CVEs: 6, exploited: 0, on CISA KEV: 0 - Vendor advisory: https://access.redhat.com/errata/RHSA-2026:50828 ## Applies to | Product | Release | Fixed in | |---|---|---| | [ruby](https://patchblox.com/security/data/product/linux/ruby.md) | RHEL 9 | 0:3.3.12-8.module+el9.8.0+24568+2bbebe96 | | [ruby-bundled-gems](https://patchblox.com/security/data/product/linux/ruby-bundled-gems.md) | RHEL 9 | 0:3.3.12-8.module+el9.8.0+24568+2bbebe96 | | [ruby-default-gems](https://patchblox.com/security/data/product/linux/ruby-default-gems.md) | RHEL 9 | 0:3.3.12-8.module+el9.8.0+24568+2bbebe96 | | [ruby-devel](https://patchblox.com/security/data/product/linux/ruby-devel.md) | RHEL 9 | 0:3.3.12-8.module+el9.8.0+24568+2bbebe96 | | [ruby-doc](https://patchblox.com/security/data/product/linux/ruby-doc.md) | RHEL 9 | 0:3.3.12-8.module+el9.8.0+24568+2bbebe96 | | [ruby-libs](https://patchblox.com/security/data/product/linux/ruby-libs.md) | RHEL 9 | 0:3.3.12-8.module+el9.8.0+24568+2bbebe96 | | [rubygem-bigdecimal](https://patchblox.com/security/data/product/linux/rubygem-bigdecimal.md) | RHEL 9 | 0:3.1.5-8.module+el9.8.0+24568+2bbebe96 | | [rubygem-bundler](https://patchblox.com/security/data/product/linux/rubygem-bundler.md) | RHEL 9 | 0:2.5.22-8.module+el9.8.0+24568+2bbebe96 | | [rubygem-io-console](https://patchblox.com/security/data/product/linux/rubygem-io-console.md) | RHEL 9 | 0:0.7.1-8.module+el9.8.0+24568+2bbebe96 | | [rubygem-irb](https://patchblox.com/security/data/product/linux/rubygem-irb.md) | RHEL 9 | 0:1.13.1-8.module+el9.8.0+24568+2bbebe96 | | [rubygem-json](https://patchblox.com/security/data/product/linux/rubygem-json.md) | RHEL 9 | 0:2.7.2-8.module+el9.8.0+24568+2bbebe96 | | [rubygem-minitest](https://patchblox.com/security/data/product/linux/rubygem-minitest.md) | RHEL 9 | 0:5.20.0-8.module+el9.8.0+24568+2bbebe96 | | [rubygem-mysql2](https://patchblox.com/security/data/product/linux/rubygem-mysql2.md) | RHEL 9 | 0:0.5.5-3.module+el9.8.0+24356+77305e91 | | [rubygem-mysql2-doc](https://patchblox.com/security/data/product/linux/rubygem-mysql2-doc.md) | RHEL 9 | 0:0.5.5-3.module+el9.8.0+24356+77305e91 | | [rubygem-pg](https://patchblox.com/security/data/product/linux/rubygem-pg.md) | RHEL 9 | 0:1.5.4-2.module+el9.8.0+24356+77305e91 | | [rubygem-pg-doc](https://patchblox.com/security/data/product/linux/rubygem-pg-doc.md) | RHEL 9 | 0:1.5.4-2.module+el9.8.0+24356+77305e91 | | [rubygem-power_assert](https://patchblox.com/security/data/product/linux/rubygem-power-assert.md) | RHEL 9 | 0:2.0.3-8.module+el9.8.0+24568+2bbebe96 | | [rubygem-psych](https://patchblox.com/security/data/product/linux/rubygem-psych.md) | RHEL 9 | 0:5.1.2-8.module+el9.8.0+24568+2bbebe96 | | [rubygem-racc](https://patchblox.com/security/data/product/linux/rubygem-racc.md) | RHEL 9 | 0:1.7.3-8.module+el9.8.0+24568+2bbebe96 | | [rubygem-rake](https://patchblox.com/security/data/product/linux/rubygem-rake.md) | RHEL 9 | 0:13.1.0-8.module+el9.8.0+24568+2bbebe96 | | [rubygem-rbs](https://patchblox.com/security/data/product/linux/rubygem-rbs.md) | RHEL 9 | 0:3.4.0-8.module+el9.8.0+24568+2bbebe96 | | [rubygem-rdoc](https://patchblox.com/security/data/product/linux/rubygem-rdoc.md) | RHEL 9 | 0:6.6.3.1-8.module+el9.8.0+24568+2bbebe96 | | [rubygem-rexml](https://patchblox.com/security/data/product/linux/rubygem-rexml.md) | RHEL 9 | 0:3.4.4-8.module+el9.8.0+24568+2bbebe96 | | [rubygem-rss](https://patchblox.com/security/data/product/linux/rubygem-rss.md) | RHEL 9 | 0:0.3.1-8.module+el9.8.0+24568+2bbebe96 | | [rubygem-test-unit](https://patchblox.com/security/data/product/linux/rubygem-test-unit.md) | RHEL 9 | 0:3.6.1-8.module+el9.8.0+24568+2bbebe96 | | [rubygem-typeprof](https://patchblox.com/security/data/product/linux/rubygem-typeprof.md) | RHEL 9 | 0:0.21.9-8.module+el9.8.0+24568+2bbebe96 | | [rubygems](https://patchblox.com/security/data/product/linux/rubygems.md) | RHEL 9 | 0:3.5.22-8.module+el9.8.0+24568+2bbebe96 | | [rubygems-devel](https://patchblox.com/security/data/product/linux/rubygems-devel.md) | RHEL 9 | 0:3.5.22-8.module+el9.8.0+24568+2bbebe96 | ## CVEs this fix closes | CVE | Priority | Title | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2026-47240](https://patchblox.com/security/data/cve/CVE-2026-47240.md) | High | Net::IMAP: Command Injection via non-synchronizing literal in "raw" argument | 7.3 | 0.0083 | | | [CVE-2026-27820](https://patchblox.com/security/data/cve/CVE-2026-27820.md) | High | zlib: Buffer Overflow in Zlib::GzipReader ungetc via large input leads to memory corruption | 7.3 | 0.0056 | | | [CVE-2026-42257](https://patchblox.com/security/data/cve/CVE-2026-42257.md) | High | net-imap: Command Injection via "raw" arguments to multiple commands | 7.3 | 0.0043 | | | [CVE-2026-47241](https://patchblox.com/security/data/cve/CVE-2026-47241.md) | High | Net::IMAP: Denial of Service via incomplete raw argument validation | 7.3 | 0.0038 | | | [CVE-2026-42256](https://patchblox.com/security/data/cve/CVE-2026-42256.md) | High | net-imap: Denial of service via high iteration count for `SCRAM-*` authentication | 7.3 | 0.0030 | | | [CVE-2026-47242](https://patchblox.com/security/data/cve/CVE-2026-47242.md) | High | ruby: Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby | 7.3 | 0.0018 | | --- 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