Vulnerability · Published Feb 6, 2026 · Assigned by GitHub_M

CVE-2026-25724Claude Code Has Permission Deny Bypass Through Symbolic Links

Low 2.3

In plain English

A low-severity security flaw in claude-code from anthropics. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)2.3Low
Exploit odds (30 days)0.5%top 58.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Claude Code is an agentic coding tool. Prior to version 2.1.7, Claude Code failed to strictly enforce deny rules configured in settings.json when accessing files through symbolic links. If a user explicitly denied Claude Code access to a file (such as /etc/passwd) and Claude Code had access to a symbolic link pointing to that file, it was possible for Claude Code to read the restricted file through the symlink without triggering deny rule enforcement. This issue has been patched in version 2.1.7.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
npm@anthropic-ai/claude-code2.1.7GHSA-4q92-rfm6-2cqx

Affected products (as reported)

VendorProductVersions
anthropics claude-code < 2.1.7

Weakness: CWE-61, CWE-285 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

References