What is CVE-2026-9091?

CVE-2026-9091 is a medium-severity vulnerability in Casdoor, classified under CWE-306 MISSING AUTHENTICATION FOR CRITICAL FUNCTION. CVSS score: 5.3/10. Published 2026-05-28.

How severe is CVE-2026-9091?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Casdoor

CVE-2026-9091

Casdoor versions 2.362.0 and earlier contain a logic flaw in the social‑login binding flow that allows users to bypass configured MFA requirements. The binding‑rule code path in controllers/auth.go calls HandleLoggedIn directly without inv…

EPSS: 0.000 (11.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Casdoor — versions 0

References

cret@cert.org

Frequently asked questions

What is CVE-2026-9091?: CVE-2026-9091 is a medium-severity vulnerability in Casdoor, classified under CWE-306 MISSING AUTHENTICATION FOR CRITICAL FUNCTION. CVSS score: 5.3/10. Published 2026-05-28.
How severe is CVE-2026-9091?: Medium severity. CVSS v3 base score is 5.3 out of 10.