CVE-2026-9090
Critical
Description
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.
SeverityCritical
CVSS9.1
Exploit probability—
ProductGithub.com/casdoor/casdoor
PublishedMay 28, 2026
First seenMay 28, 2026
Weakness typeCWE-347CWE-347
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/casdoor/casdoorGo | v ≤ 1.1000.1-0.20260321120606-239e8bd69487, No range specified | — |
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