What is CVE-2025-59829?

CVE-2025-59829 is a medium-severity vulnerability in Anthropic Claude Code, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 6.5/10. Published 2025-10-03.

How severe is CVE-2025-59829?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Anthropic Claude Code

CVE-2025-59829

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.

EPSS: 0.004 (32.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Anthropic Claude_code
Anthropics Claude-code — versions < 1.0.120

Weakness classification (CWE)

CWE-61 — UNIX Symbolic Link (Symlink) Following

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2025-59829?: CVE-2025-59829 is a medium-severity vulnerability in Anthropic Claude Code, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 6.5/10. Published 2025-10-03.
How severe is CVE-2025-59829?: Medium severity. CVSS v3 base score is 6.5 out of 10.