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.
References (2)
Core 2
Core References
Various Sources
https://www.terra.security/blog/when-ai-becomes-the-attack-surface-lessons-from-discovering-cve-2026-25724
Third Party Advisory x_refsource_confirm
https://github.com/anthropics/claude-code/security/advisories/GHSA-4q92-rfm6-2cqx
Scores
CVSS v3
7.5
EPSS
0.0038
EPSS Percentile
29.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-285
CWE-61
Status
published
Products (3)
anthropic/claude_code
< 2.1.7
anthropic-ai/claude-code
0 - 2.1.7npm
anthropics/claude-code
< 2.1.7
Published
Feb 06, 2026
Tracked Since
Feb 18, 2026