Arbitrary Code Execution

Claude Code is vulnerable to Arbitrary Code Execution. The vulnerability is due to Yarn plugin execution occurring before the startup trust dialog when running in a project using Yarn 3.0 or above, allowing malicious project plugins to execute code if a user launches Claude Code in an untrusted...

CVE-2025-65099

Claude Code is an agentic coding tool. Prior to version 1.0.39, when running on a machine with Yarn 3.0 or above, Claude Code could have been tricked to execute code contained in a project via yarn plugins before the user accepted the startup trust dialog. Exploiting this would have required a us...

Claude Code vulnerable to command execution prior to startup trust dialog

When using Claude Code with Yarn installed, Yarn config files can trigger code execution when running yarn --version. This could lead to a bypass of the directory trust dialog in Claude Code, as plugins and yarnPath could be executed prior to the user accepting the risks of working in an untruste...

GHSA-5HHX-V7F6-X7GV Claude Code vulnerable to command execution prior to startup trust dialog

When using Claude Code with Yarn installed, Yarn config files can trigger code execution when running yarn --version. This could lead to a bypass of the directory trust dialog in Claude Code, as plugins and yarnPath could be executed prior to the user accepting the risks of working in an untruste...

CVE-2025-65099

Claude Code is an agentic coding tool. Prior to version 1.0.39, when running on a machine with Yarn 3.0 or above, Claude Code could have been tricked to execute code contained in a project via yarn plugins before the user accepted the startup trust dialog. Exploiting this would have required a us...

CVE-2025-65099

CVE-2025-65099 – Claude Code pre‑startup trust bypass via Yarn 3.x plugins is raised for Claude Code prior to 1.0.39. The issue allowed code execution from a project directory by exploiting Yarn 3.0+ plugins before the startup trust dialog was accepted. Affected scenario required running Claude C...

CVE-2025-65099 Claude Code vulnerable to command execution prior to startup trust dialog

Claude Code is an agentic coding tool. Prior to version 1.0.39, when running on a machine with Yarn 3.0 or above, Claude Code could have been tricked to execute code contained in a project via yarn plugins before the user accepted the startup trust dialog. Exploiting this would have required a us...

CVE-2025-65099 Claude Code vulnerable to command execution prior to startup trust dialog

Claude Code is an agentic coding tool. Prior to version 1.0.39, when running on a machine with Yarn 3.0 or above, Claude Code could have been tricked to execute code contained in a project via yarn plugins before the user accepted the startup trust dialog. Exploiting this would have required a us...

CVE-2025-65099 Claude Code vulnerable to command execution prior to startup trust dialog

Claude Code is an agentic coding tool. Prior to version 1.0.39, when running on a machine with Yarn 3.0 or above, Claude Code could have been tricked to execute code contained in a project via yarn plugins before the user accepted the startup trust dialog. Exploiting this would have required a us...

PT-2025-47513

Name of the Vulnerable Software and Affected Versions Claude Code versions prior to 1.0.39 Description Prior to version 1.0.39, Claude Code could be tricked into executing code contained in a project through Yarn plugins before the user accepted the startup trust dialog, when running on a machine...

CVE-2025-59828

Claude Code is an agentic coding tool. Prior to Claude Code version 1.0.39, when using Claude Code with Yarn versions 2.0+, Yarn plugins are auto-executed when running yarn --version. This could lead to a bypass of the directory trust dialog in Claude Code, as plugins would be executed prior to t...

CVE-2025-59828

Claude Code is an agentic coding tool. Prior to Claude Code version 1.0.39, when using Claude Code with Yarn versions 2.0+, Yarn plugins are auto-executed when running yarn --version. This could lead to a bypass of the directory trust dialog in Claude Code, as plugins would be executed prior to t...

PT-2025-39338

Name of the Vulnerable Software and Affected Versions Claude Code versions prior to 1.0.39 Description Claude Code is an agentic coding tool. When used with Yarn versions 2.0 and higher, Yarn plugins are automatically executed when running yarn --version in versions prior to 1.0.39. This could...