CVE-2025-65099

Claude Code vulnerable to command execution prior to startup trust dialog

Published: Nov 19, 2025Updated: Nov 25, 2025 Sources: CVE List NVD GHSACWE-94

9.8CRITICAL

Description

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 user to start Claude Code in an untrusted directory and to be using Yarn 3.0 or above. This issue has been patched in version 1.0.39.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-94

Affected Products

anthropic

commercial·USaka claude

claude codeSaaS

AI / ML / llm-serving-inference

npm

package-ecosystem

@anthropic-ai/claude-code

OSS Libraries

anthropics

commercial·USaka claude-code, anthropic-sdk-python, anthropic-sdk-typescript

claude-codeSaaS

AI / ML / llm-serving-inference

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Execution

Initial Access

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References

https://github.com/anthropics/claude-code/security/advisories/GHSA-5hhx-v7f6-x7gv

github.com

https://nvd.nist.gov/vuln/detail/CVE-2025-65099

nvd.nist.gov

https://github.com/anthropics/claude-code

github.com

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