CVE-2026-25722
criticalpriority · track · 36EPSS 0.005 · 44 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 5.2–9.1
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-66q4-vfjg-2qhhClaude Code Vulnerable to Command Injection via Directory Change Bypasses Write Protection2026-02-06ghsa · osvUS
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!
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (4)
External citations — patches, advisories, analysis.
- https://github.com/anthropics/claude-code/security/advisories/GHSA-66q4-vfjg-2qhhcnnvd
- https://github.com/anthropics/claude-code/tagsPatchcnnvd
- https://github.com/anthropics/claude-code/security/advisories/GHSA-66q4-vfjg-2qhhenisa_euvd
- https://github.com/anthropics/claude-code/security/advisories/GHSA-66q4-vfjg-2qhhVendor Advisorynvd
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