CVE-2026-25722
Claude Code Vulnerable to Command Injection via Directory Change Bypasses Write Protection
Description
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. About Claude Code thanks hackerone.com/nil221 for reporting this issue!
How to fix CVE-2026-25722
To remediate CVE-2026-25722, upgrade the affected package to a fixed version below.
- —upgrade to 2.0.57 or later
Is CVE-2026-25722 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2.0.57
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |