What is CVE-2026-9098?

CVE-2026-9098 is a critical-severity vulnerability in Casdoor, classified under CWE-346 ORIGIN VALIDATION ERROR. CVSS score: 9.1/10. Published 2026-05-28.

How severe is CVE-2026-9098?

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

Vulnerability in Casdoor

CVE-2026-9098

In Casdoor versions 2.362.0 and earlier, the SAML callback handler in controllers/auth.go accepts any well-formed SAMLResponse sent to /api/acs without verifying that it corresponds to an AuthnRequest previously issued by Casdoor. Addition…

EPSS: 0.000 (7.1th 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

Casdoor — versions 0

References

cret@cert.org

Frequently asked questions

What is CVE-2026-9098?: CVE-2026-9098 is a critical-severity vulnerability in Casdoor, classified under CWE-346 ORIGIN VALIDATION ERROR. CVSS score: 9.1/10. Published 2026-05-28.
How severe is CVE-2026-9098?: Critical severity. CVSS v3 base score is 9.1 out of 10.