What is CVE-2026-36727?

CVE-2026-36727 is a critical-severity vulnerability, classified under Improper Authentication. CVSS score: 9.1/10. Published 2026-06-09.

How severe is CVE-2026-36727?

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

CVE-2026-36727

CVE-2026-36727

An insecure authentication vulnerability in the /api/social-sign-in endpoint of bookcars v8.3 allows attackers to bypass authentication via a forged JWT token.

Vulnerability class: Broken Authentication

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.

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

cve@mitre.org

Frequently asked questions

What is CVE-2026-36727?: CVE-2026-36727 is a critical-severity vulnerability, classified under Improper Authentication. CVSS score: 9.1/10. Published 2026-06-09.
How severe is CVE-2026-36727?: Critical severity. CVSS v3 base score is 9.1 out of 10.