CVE-2026-40068

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/anthropics/claude-code/security/advisories/GHSA-q5hj-mxqh-vv77	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:anthropic:claude_code:*:*:*:*:*:node.js:*:*

History

12 May 2026, 16:21

Type	Values Removed	Values Added
References	~~() https://github.com/anthropics/claude-code/security/advisories/GHSA-q5hj-mxqh-vv77 -~~	() https://github.com/anthropics/claude-code/security/advisories/GHSA-q5hj-mxqh-vv77 - Vendor Advisory
CPE		cpe:2.3:a:anthropic:claude_code::::::node.js::*
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 8.8
First Time		Anthropic claude Code Anthropic
CWE		NVD-CWE-noinfo

05 May 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-05 21:16

Updated : 2026-05-12 16:21

NVD link : CVE-2026-40068

Mitre link : CVE-2026-40068

CVE.ORG link : CVE-2026-40068

JSON object : View

Products Affected

anthropic

claude_code

CWE

CWE-20

Improper Input Validation

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

NVD-CWE-noinfo

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