Vulnerability intelligence

CVE-2026-9090

Casdoor versions 2.362.0 and earlier contain a vulnerability that allows an attacker to bypass authentication by supplying an arbitrary signing certificate. The buildSpCertificateStore function extracts the X.509 certificate directly from the incoming SAMLResponse instead of using the trusted pre-configured Identity Provider certificate, allowing an attacker to forge assertions signed with an attacker-controlled key.

CVSS Score

9.1

Critical

EPSS — Exploit Probability

0.2%

Riskier than 10% of all CVEs

Exploitation

Not in CISA KEV

No federal exploitation record

Remediation

unknown

Check vendor advisories

NVD entry PoC / advisory

1 article across 1 outlet · first covered Jun 2, 2026 · latest Jun 2, 2026

Coverage timeline

Severe Casdoor Identity Platform Flaws Expose Corporate Networks
securityonline.info · Jun 2, 2026