CVE-2026-55607
HIGH
MEDIUM
Priority: 0.05
BB Relevance:
66/100
Published: 2026-06-29
Modified: 2026-10-25
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Auth
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
Passive
S:
X
AT:
Present
VC:
High
VI:
High
VA:
High
Description
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.
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| anthropic | claude_code | 2.1.38 – 2.1.163 |
References & Advisories (1)
Vendor Advisory