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CVE-2025-59829

Claude Code: Permission deny bypass is possible through symlink

Published: Oct 3, 2025Updated: Oct 24, 2025 Sources: CVE List NVD GHSACWE-61
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.4%
Top 69.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-61

Affected Products

claude-codeanthropics
SaaS
AI / ML / llm-serving-inference
claude codeanthropic
SaaS
AI / ML / llm-serving-inference
@anthropic-ai/claude-codenpmOSS Libraries
anthropicscommercialUSAI / MLaka claude-code, anthropic-sdk-python, anthropic-sdk-typescript
anthropiccommercialUSAI / MLaka claude
npmpackage-ecosystemOSS Libraries

Exploitability

Official Patch Available

References

https://github.com/anthropics/claude-code/security/advisories/GHSA-66m2-gx93-v996
github.com
https://nvd.nist.gov/vuln/detail/CVE-2025-59829
nvd.nist.gov
https://github.com/anthropics/claude-code
github.com

Timeline

Published
Oct 3, 2025
Last Updated
Oct 24, 2025

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