What is CVE-2026-25725?

CVE-2026-25725 is a critical-severity vulnerability in Anthropic Claude_code, classified under Trust Boundary Violation. CVSS score: 10.0/10. Published 2026-02-06.

How severe is CVE-2026-25725?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Vulnerability in Anthropic Claude_code

CVE-2026-25725

Claude Code is an agentic coding tool. Prior to version 2.1.2, Claude Code's bubblewrap sandboxing mechanism failed to properly protect the .claude/settings.json configuration file when it did not exist at startup. While the parent directo…

EPSS: 0.004 (33.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Anthropic Claude_code
Anthropics Claude-code — versions < 2.1.2

Weakness classification (CWE)

CWE-501 — Trust Boundary Violation
CWE-668 — Exposure of Resource to Wrong Sphere

References

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

Frequently asked questions

What is CVE-2026-25725?: CVE-2026-25725 is a critical-severity vulnerability in Anthropic Claude_code, classified under Trust Boundary Violation. CVSS score: 10.0/10. Published 2026-02-06.
How severe is CVE-2026-25725?: Critical severity. CVSS v3 base score is 10.0 out of 10.