# Ruby 3.3.12 — Ruby 3.3.12 Released

- Product: Ruby (https://whatsnew.fyi/product/ruby)
- Vendor: Ruby
- Date: 2026-07-16
- Version: 3.3.12
- Original notes: https://www.ruby-lang.org/en/news/2026/07/16/ruby-3-3-12-released/
- Permalink: https://whatsnew.fyi/product/ruby/releases/3.3.12

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Ruby 3.3.12 has been released. This release includes security fixes. Please check the topics below for details. CVE-2026-41316: ERB @_init deserialization guard bypass via def_module / def_method / de…

- **security** — Fix ERB @_init deserialization guard bypass via def_module / def_method