CVE-2025-59828
published 2025-09-24CVE-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…
PriorityP359critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.34%
26.0th percentile
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.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| anthropic-ai | claude-code | >= 0 < 1.0.39 | 1.0.39 |
| anthropic | claude_code | < 1.0.39 | 1.0.39 |
| anthropics | claude-code | < 1.0.39 | 1.0.39 |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv4.07.7HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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GHSA
Claude Code Vulnerable to Arbitrary Code Execution via Plugin Autoloading with Specific Yarn Versions
ghsa·2025-09-24
CVE-2025-59828 [HIGH] CWE-829 Claude Code Vulnerable to Arbitrary Code Execution via Plugin Autoloading with Specific Yarn Versions
Claude Code Vulnerable to Arbitrary Code Execution via Plugin Autoloading with Specific Yarn Versions
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 untrusted directory. 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.
Thank you to Benjamin Faller, Redguard AG and Michael Hess for reporting this issue!
OSV
Claude Code Vulnerable to Arbitrary Code Execution via Plugin Autoloading with Specific Yarn Versions
osv·2025-09-24
CVE-2025-59828 [HIGH] Claude Code Vulnerable to Arbitrary Code Execution via Plugin Autoloading with Specific Yarn Versions
Claude Code Vulnerable to Arbitrary Code Execution via Plugin Autoloading with Specific Yarn Versions
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 untrusted directory. 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.
Thank you to Benjamin Faller, Redguard AG and Michael Hess for reporting this issue!
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-09-24
Published