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Thursday, August 6, 2026

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[Release] anthropics/claude-code v2.1.223: v2.1.223

ashwin-antAug 6, 2026

Claude Code v2.1.223 introduces owner wildcard marketplace controls, improves security by fixing permission bypass vulnerabilities and sandbox escapes, and enhances model discovery and session management. Key updates include stricter command obfuscation prevention, workflow sandbox isolation fixes, and better handling of context windows across Claude models. The release also refines the code review workflow and improves managed settings merging for enterprise deployments.

  • Owner wildcard entries (`owner/*`) now supported in `strictKnownMarketplaces` and `blockedMarketplaces` for org-level marketplace control
  • Fixed critical Bash permission bypass where crafted commands could hide parts from permission checks using padding or invisible Unicode
  • Fixed workflow scripts escaping sandbox via dynamic `import()` statements—code execution now properly contained
  • +7 more key points...
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