TI-2026-07987 Aliases CVE-2026-9090 GHSA-fwgq-j9r9-qjgr

Improper authentication in Casdoor

MEDIUM 47CWE-287Published 2026-05-28 · Updated 2026-05-29

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-287.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00216 12th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Casdoor	Casdoor	up to 2.362.0	—	No fix listed	CNA
—	github.com/casdoor/casdoor (Go)	up to 1.1000.1-0.20260321120606-239e8bd69487	—	No fix listed	GHSA-fwgq-j9r9-qjgr

Casdoor VendorCasdoor Affected up to 2.362.0 Fixed in — No fix listed CNA
github.com/casdoor/casdoor (Go) Vendor— Affected up to 1.1000.1-0.20260321120606-239e8bd69487 Fixed in — No fix listed GHSA-fwgq-j9r9-qjgr

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:casbin:casdoor::::::::	—	—	Casdoor

cpe:2.3:a:casbin:casdoor:*:*:*:*:*:*:*:* Versions — — ·Casdoor

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-9090
2026-10-03 Alias added: GHSA-fwgq-j9r9-qjgr

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-9090

Other 2

TI-2026-61806 Casdoor through 4.4.0 Private Key Exposure via Certificate Endpoints CVSS 4.0CRITICAL 9.3
TI-2026-62128 Casdoor through 4.4.0 Cross-Organization User Administration via /api/mcp CVSS 4.0CRITICAL 9.4
TI-2026-13152 Improper privilege management in Casdoor CVSS 3.1CRITICAL 9.9
TI-2024-27720 GHSL-2024-035: Casdoor CORS misconfiguration CVSS 3.1HIGH 8.8
TI-2022-22096 Casdoor before v1.126.1 was discovered to contain an arbitrary file deletion vulnerability via the uploadFile function. CVSS 3.1HIGH 8.1
TI-2022-08069 The query API in Casdoor before 1.13.1 has a SQL injection vulnerability related to the… CVSS 3.1HIGH 7.5

See all 22 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences