CVE-2026-25724

Description

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. Users on standard Claude Code auto-update received this fix automatically. Users performing manual updates are advised to update to the latest version. Claude Code thanks https://hackerone.com/ofirh for reporting this issue.

How to fix CVE-2026-25724

To remediate CVE-2026-25724, upgrade the affected package to a fixed version below.

• —upgrade to 2.1.7 or later

Is CVE-2026-25724 being exploited?

Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• from 0, < 2.1.7

CVSS scores

References (4)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2026-25724
• PATCHgithub.com/anthropics/claude-code
• WEBgithub.com/anthropics/claude-code/security/advisories/GHSA-4q92-rfm6-2cqx
• WEBwww.terra.security/blog/when-ai-becomes-the-attack-surface-lessons-from-discovering-cve-2026-25724