AnthropicGHSA-66q4-vfjg-2qhh
Command Injection via Directory Change Bypasses Write Protection
High7.7CVE-2026-25722 · Published Feb 6, 2026
Claude Code failed to properly validate directory changes when combined with write operations to protected folders. By using the `cd` command to navigate into sensitive directories like `.claude`, it was possible to bypass write protection and create or modify files without user confirmation. Reliably exploiting this required the ability to add untrusted content into a Claude Code context window. Users on standard Claude Code auto-update received this fix automatically. Users performing manual updates are advised to update to the latest version. Thank you to hackerone.com/nil221 for reporting this issue!
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| @anthropic-ai/claude-code npm | < v2.0.57 | v2.0.57 |
Details and references
More Anthropic advisories
All Anthropic| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Feb 6 | Command Injection via Piped sed Command Bypasses File Write Restrictions | High7.7 | v2.0.55 |
| Feb 6 | Sandbox Escape via Persistent Configuration Injection in settings.json | High7.7 | v2.1.2 |
| Feb 6 | Permission Deny Bypass Through Symbolic Links | Low2.3 | v2.1.7 |
| Feb 3 | Command Injection in find Command Bypasses User Approval Prompt | High7.7 | v2.0.72 |
| Feb 3 | Path Restriction Bypass via ZSH Clobber Allows Arbitrary File Writes | High7.7 | v2.0.74 |
| Feb 3 | Domain Validation Bypass Allows Automatic Requests to Attacker-Controlled Domains | High7.1 | v1.0.111 |