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CVE-2026-55607

Claude Code: Sandbox Escape via Git Worktree Path Confusion Allows Unsandboxed Code Execution

Published: Jun 29, 2026Updated: Jun 30, 2026 Sources: CVE List NVDCWE-22
8.8HIGH
NVD MITRE
EPSS Score
0.6%
Top 56.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-22CWE-59CWE-78

Affected Products

anthropics
commercial·USaka claude-code, anthropic-sdk-python, anthropic-sdk-typescript
claude-codeSaaS
AI / ML / llm-serving-inference
anthropic
commercial·USaka claude
claude codeSaaS
AI / ML / llm-serving-inference

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques
Collection
Discovery
Execution
View detailed technique mapping

References

https://github.com/anthropics/claude-code/security/advisories/GHSA-7835-87q9-rgvv
github.com

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