CVE-2026-25723
MEDIUM
GHSA-mhg7-666j-cqg4
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Lifecycle Timeline
3Description
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.
Analysis
Claude Code versions prior to 2.0.55 insufficiently validate piped sed commands, permitting authenticated users to circumvent file write protections and deposit files in restricted directories including .claude folders and locations outside project scope. An attacker with access to the "accept edits" feature can exploit this to write malicious content to sensitive areas of the system. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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