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High RLSA-2026:18039 1 CVE

Important: ruby security update

Published May 19, 2026 · Updated May 19, 2026

Ecosystem: Rocky Linux

Summary

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.

Security Fix(es):

* erb: ERB: Arbitrary code execution via deserialization bypass (CVE-2026-41316)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 1

ReleasePackageFixed in
Rocky Linux · 9 ruby 0:3.0.7-166.el9_7

Vulnerabilities 1

  • High 8.1
    CVE-2026-41316

    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…

    ruby erb logstash-9.3 logstash-9.3-iamguarded-compat Debian Ubuntu Alpine Wolfi RubyGems

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2461369