UNIX symbolic link following in Claude Code - CVE-2026-25724
Published: April 30, 2026
Vulnerability identifier: #VU128515
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-25724
CWE-ID: CWE-61
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Anthropic
Affected software:
Claude Code
Claude Code
Detailed vulnerability description
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.
How to mitigate CVE-2026-25724
Install security update from vendor's website.