CVE-2025-65099CRITICAL 9.8EPSS p35.0%

CVE-2025-65099CVE-2025-65099

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.44% probability of exploitation · percentile 35.0% · 2026-06-19T12:03:05Z
Published2025-11-19
Last modified2025-11-25

Underlying weaknesses· 1

CWE-94

References

  1. https://github.com/anthropics/claude-code/security/advisories/GHSA-5hhx-v7f6-x7gv

1

TypeTargetConfidenceTier
WeaknessImproper Control of Generation of Code ('Code Injection')cwe-940%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.