by Kastro
Paper/Archive/CVE-2026-25722

CVE-2026-25722

anthropics claude-code — Claude Code Vulnerable to Command Injection via Directory Change Bypasses Write Protection

EPSS 0.5%CVSS 9.1
critical.is priorityof 100
36
CVSS 9.1 (NVD)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 44.0.440 × 208.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Claude Code is an agentic coding tool. Prior to version 2.0.57, 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. This issue has been patched in version 2.0.57.

Affected

ProductAffectedFixed inSource
claude-code< 2.0.57–CNA

Scores by source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
GitHub_M (CNA)7.7CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/anthropics/claude-code/security/advisories/GHSA-66q4-vfjg-2qhh