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TI-2025-37268 Aliases CVE-2025-59829GHSA-66m2-gx93-v996

Claude Code: Permission deny bypass is possible through symlink

Priority LOW 12CWE-61Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

Claude Code is an agentic coding tool. Versions below 1.0.120 failed to account for symlinks when checking permission deny rules. If a user explicitly denied Claude Code access to a file and Claude Code had access to a symlink pointing to that file, it was possible for Claude Code to access the file. Users on standard Claude Code auto-update will have received this fix automatically. Users performing manual updates are advised to update to the latest version. This issue is fixed in version 1.0.120.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00447 39th percentileScored 2026-11-07
Fix Fixed claude-code (anthropics): 1.0.120@anthropic-ai/claude-code (npm): 1.0.120

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 1.0.1201.0.120Patch availableCNA
—@anthropic-ai/claude-code (npm)before 1.0.1201.0.120Patch availableGHSA-66m2-gx93-v996
  • claude-code Vendoranthropics Affected before 1.0.120 Fixed in 1.0.120 Patch available CNA
  • @anthropic-ai/claude-code (npm) Vendor— Affected before 1.0.120 Fixed in 1.0.120 Patch available GHSA-66m2-gx93-v996

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:anthropic:claude_code:*:*:*:*:*:node.js:*:*before 1.0.120Vulnerableanthropics
  • cpe:2.3:a:anthropic:claude_code:*:*:*:*:*:node.js:*:* Versions before 1.0.120 Vulnerable ·anthropics

Remediation

  • Fix · CNA claude-code (anthropics) Fixed in 1.0.120
  • Fix · GHSA-66m2-gx93-v996 @anthropic-ai/claude-code (npm) Fixed in 1.0.120 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-59829
  2. 2026-10-03 Alias added: GHSA-66m2-gx93-v996

References

Advisory 2

Other 1

  • 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