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CVE-2026-9090 — Vulnerability in github.com/casdoor/casdoor — CVE...

CRITICAL

Casdoor has an authentication bypass

Published May 28, 2026Updated July 7, 2026Source: osv

Summary

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.

Advisory Timeline

  • First published May 28, 2026 (137 days ago).
  • Last revised July 7, 2026 — 40 days after initial publication.

Affected Packages (1)

Affects 1 ecosystem: go (1).

PackageEcosystemAffectedFixed In
github.com/casdoor/casdoor
go
All versionsRange-based data available

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-287
    Improper AuthenticationMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.1 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

Frequently Asked Questions

What is CVE-2026-9090?
Casdoor has an authentication bypass This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.1/10).
How do I check if my project is affected by CVE-2026-9090?
CVE-2026-9090 affects github.com/casdoor/casdoor. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-9090 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.1

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-fwgq-j9r9-qjgr
GO-2026-5895

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    CRITICAL

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  • CVE-2026-9094
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  • CVE-2026-9098
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