by Kastro
Paper/Archive/CVE-2026-9090

CVE-2026-9090

Casdoor Casdoor — CVE-2026-9090

EPSS 0.2%CVSS 9.1
critical.is priorityof 100
30
CVSS 9.1 (ADP)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 12.1.121 × 202.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Casdoor≤ 2.362.0–CNA

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refkb.cert.org/vuls/id/780781