CVE-2025-65099 HIGH

CVE-2025-65099: Claude Code vulnerable to command execution prior to startup trust dialog

Vendor Anthropics
Product claude-code
Weakness CWE-94 · Code injection
Published November 19, 2025
Last update November 20, 2025
View on NVD All CVEs

CVSS base score

7.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction —
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

November 19, 2025 CVE published
November 20, 2025 Record updated