What is CVE-2026-3432?

CVE-2026-3432 is a critical-severity vulnerability in Sim, classified under Missing Authorization. CVSS score: 9.1/10. Published 2026-03-02.

How severe is CVE-2026-3432?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Auth bypass in Sim

CVE-2026-3432

On SimStudio version below to 0.5.74, the `/api/auth/oauth/token` endpoint contains a code path that bypasses all authorization checks when provided with `credentialAccountUserId` and `providerId` parameters. An unauthenticated attacker ca…

Vulnerability class: Broken Access Control

EPSS: 0.003 (21.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Sim
Simstudioai Sim — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

vulnreport@tenable.com (Third Party Advisory)

Frequently asked questions

What is CVE-2026-3432?: CVE-2026-3432 is a critical-severity vulnerability in Sim, classified under Missing Authorization. CVSS score: 9.1/10. Published 2026-03-02.
How severe is CVE-2026-3432?: Critical severity. CVSS v3 base score is 9.1 out of 10.