VULNERABILITY INTELLIGENCE

CVE-2025-65099

CVSS score9.8 CRITICAL
EPSS probability0.55%
CISA KEVNot currently listed
Published2025-11-19
Last modified2026-10-18
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • security-advisories@github.com: CWE-94

Primary references