SB2026043034 - UNIX symbolic link following in Claude Code
Published: April 30, 2026
Security Bulletin ID
SB2026043034
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) UNIX symbolic link following (CVE-ID: CVE-2026-25724)
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to unix symbolic link following in deny rule enforcement for file access when accessing files through symbolic links. A remote attacker can cause Claude Code to read a denied file via a symbolic link to disclose sensitive information.
User interaction is required.
Remediation
Install update from vendor's website.