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TI-2026-20793 Aliases CVE-2026-25724GHSA-4q92-rfm6-2cqx

Claude Code Has Permission Deny Bypass Through Symbolic Links

Priority LOW 13CWE-285Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-285.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00475 41st percentileScored 2026-11-07
Fix Fixed claude-code (anthropics): 2.1.7@anthropic-ai/claude-code (npm): 2.1.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
anthropicsclaude-codebefore 2.1.72.1.7Patch availableCNA
—@anthropic-ai/claude-code (npm)before 2.1.72.1.7Patch availableGHSA-4q92-rfm6-2cqx
  • claude-code Vendoranthropics Affected before 2.1.7 Fixed in 2.1.7 Patch available CNA
  • @anthropic-ai/claude-code (npm) Vendor— Affected before 2.1.7 Fixed in 2.1.7 Patch available GHSA-4q92-rfm6-2cqx

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:anthropic:claude_code:*:*:*:*:*:node.js:*:*before 2.1.7Vulnerableanthropics
  • cpe:2.3:a:anthropic:claude_code:*:*:*:*:*:node.js:*:* Versions before 2.1.7 Vulnerable ·anthropics

Remediation

  • Fix · CNA claude-code (anthropics) Fixed in 2.1.7
  • Fix · GHSA-4q92-rfm6-2cqx @anthropic-ai/claude-code (npm) Fixed in 2.1.7 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-25724
  2. 2026-10-03 Alias added: GHSA-4q92-rfm6-2cqx
  3. 2026-10-04 EPSS moved to the 50th–90th percentile
  4. 2026-10-25 EPSS moved to the below the 50th percentile

References

Advisory 2

Other 2

  • TI-2025-40558 Claude Code Command Validation Bypass Allows Arbitrary Code Execution CVSS 4.0HIGH 8.7
  • TI-2025-36683 Claude Code vulnerable to arbitrary code execution caused by maliciously configured git email CVSS 4.0HIGH 8.7
  • TI-2025-37066 Claude Code's startup trust dialog could lead to Command Execution attack CVSS 4.0HIGH 8.7
  • TI-2026-17554 Claude Code Leaks Data via Malicious Environment Configuration Before Trust Confirmation CVSS 4.0MEDIUM 5.3
  • TI-2025-40093 @anthropic-ai/claude-code has Sed Command Validation Bypass that Allows Arbitrary File Writes CVSS 4.0HIGH 8.7
  • TI-2025-36422 Claude Code rg command had Command Injection that allowed bypass of user approval prompt for command execution CVSS 4.0HIGH 8.7
See all 25 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences