HIGHVulnerability
Verified
Global

NVD HIGH: CVE-2026-55607 — Claude Code is an agentic coding tool. From 2.1.38 until 2.1.163, Claude Code's...

·Source: NIST NVD

Updated:

Executive Summary

Claude Code is an agentic coding tool. From 2.1.38 until 2.1.163, Claude Code's worktree handling allowed creation of worktrees named ".git" and navigation to worktrees outside the sandbox context, enabling git directory confusion attacks. By exploiting symlink manipulation and git fsmonitor execution during worktree operations, an attacker could overwrite files in the user's home directory (such

Analysis

Claude Code is an agentic coding tool. From 2.1.38 until 2.1.163, Claude Code's worktree handling allowed creation of worktrees named ".git" and navigation to worktrees outside the sandbox context, enabling git directory confusion attacks. By exploiting symlink manipulation and git fsmonitor execution during worktree operations, an attacker could overwrite files in the user's home directory (such as .zshenv), leading to code execution outside of seatbelt sandbox restrictions. Reliably exploiting this required the user to clone a malicious repository containing prompt injection content and run Claude Code against it. This vulnerability is fixed in 2.1.163. CVSS Score: 8.8. Published: 2026-06-29T15:16:41.597.

Indicators of Compromise (1)

CVE (1)
CVE-2026-55607
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Jun 29, 2026. Verified by: NIST.

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