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CVE-2025-59828

Claude Code Vulnerable to Arbitrary Code Execution via Plugin Autoloading with Specific Yarn Versions

Published: Sep 24, 2025Updated: Nov 26, 2025 Sources: CVE List NVD GHSACWE-829
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
0.3%
Top 74.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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 the user accepting the risks of working in an untrusted directory. Users running Yarn Classic were unaffected by this issue. This issue has been fixed in version 1.0.39. Users on standard Claude Code auto-update will have received this fix automatically. Users performing manual updates are advised to update to the latest version.

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-829CWE-862

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

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Exploitability

Official Patch Available

MITRE ATT&CK

3 techniques
Initial Access
View detailed technique mapping

References

https://github.com/anthropics/claude-code/security/advisories/GHSA-2jjv-qf24-vfm4
github.com
https://nvd.nist.gov/vuln/detail/CVE-2025-59828
nvd.nist.gov
https://github.com/anthropics/claude-code
github.com
and 3 more references View all →

Timeline

Published
Sep 24, 2025
Last Updated
Nov 26, 2025

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