VULNERABILITY INTELLIGENCE

CVE-2026-40068

CVSS score8.8 HIGH
EPSS probability0.31%
CISA KEVNot currently listed
Published2026-05-05
Last modified2026-07-24
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Description

In versions 2.1.63 through 2.1.83 of Claude Code, the folder trust determination logic used the git worktree commondir file without validating its contents. An attacker could craft a malicious repository with a commondir file pointing to a path the victim had previously trusted, causing Claude Code to bypass its trust confirmation dialog and immediately execute hooks defined in `.claude/settings.json`. Exploitation requires the victim to clone the malicious repository and run Claude Code within it, and the attacker must know or guess a path the victim had already trusted. This issue has been fixed in version 2.1.84.

Weakness classification

  • security-advisories@github.com: CWE-20
  • nvd@nist.gov: NVD-CWE-noinfo

Primary references