Claude Code is an agentic coding tool. Prior to version 2.0.55, Claude Code failed to properly validate commands using piped sed operations with the echo command, allowing attackers to bypass file write restrictions. This vulnerability enabled writing to sensitive directories like the .claude folder and paths outside the project scope. Exploiting this required the ability to execute commands through Claude Code with the "accept edits" feature enabled. This issue has been patched in version 2.0.55.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-mhg7-666j-cqg4 Claude Code Vulnerable to Command Injection via Piped sed Command Bypasses File Write Restrictions
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 09 Feb 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Anthropic
Anthropic claude Code
CPEs cpe:2.3:a:anthropic:claude_code:*:*:*:*:*:node.js:*:*
Vendors & Products Anthropic
Anthropic claude Code
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'}


Mon, 09 Feb 2026 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Anthropics
Anthropics claude Code
Vendors & Products Anthropics
Anthropics claude Code

Fri, 06 Feb 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 06 Feb 2026 18:15:00 +0000

Type Values Removed Values Added
Description Claude Code is an agentic coding tool. Prior to version 2.0.55, Claude Code failed to properly validate commands using piped sed operations with the echo command, allowing attackers to bypass file write restrictions. This vulnerability enabled writing to sensitive directories like the .claude folder and paths outside the project scope. Exploiting this required the ability to execute commands through Claude Code with the "accept edits" feature enabled. This issue has been patched in version 2.0.55.
Title Claude Code Vulnerable to Command Injection via Piped sed Command Bypasses File Write Restrictions
Weaknesses CWE-20
CWE-78
References
Metrics cvssV4_0

{'score': 7.7, 'vector': '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'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-06T18:40:54.158Z

Reserved: 2026-02-05T16:48:00.426Z

Link: CVE-2026-25723

cve-icon Vulnrichment

Updated: 2026-02-06T18:40:49.688Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-06T18:15:59.237

Modified: 2026-02-09T14:50:15.813

Link: CVE-2026-25723

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-09T10:49:54Z

Weaknesses