What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-06 · updated 2026-06-17
• Weakness: CWE-61

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 products

• anthropics claude-code: before 2.1.7 — fixed in 2.1.7

How to fix

Upgrade to a fixed version: anthropics claude-code 2.1.7. Check the vendor advisory for mitigations.

References

• https://github.com/anthropics/claude-code/security/advisories/GHSA-4q92-rfm6-2cqx
• https://www.terra.security/blog/when-ai-becomes-the-attack-surface-lessons-from-discovering-cve-2026-25724

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