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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
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
0.4%
Top 65.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
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

claude codeanthropic
SaaS
AI / ML / llm-serving-inference
@anthropic-ai/claude-codenpmOSS Libraries
claude-codeanthropics
SaaS
AI / ML / llm-serving-inference
anthropiccommercialUSAI / MLaka claude
npmpackage-ecosystemOSS Libraries
anthropicscommercialUSAI / MLaka claude-code, anthropic-sdk-python, anthropic-sdk-typescript

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

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

Timeline

Published
Nov 19, 2025
Last Updated
Nov 25, 2025

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