# CVE-2026-90942

## Summary

- **CVE ID:** CVE-2026-90942
- **Severity:** CRITICAL
- **CVSS Score:** 9.6 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N)
- **CWE:** CWE-863
- **Published:** Sep 14, 2026
- **Last Modified:** Sep 14, 2026

## Description

Casdoor through 4.4.0 fails to properly mask the instance-wide built-in certificate private key in /api/get-certs and /api/get-cert endpoints, allowing organization administrators to retrieve it. Attackers can use the exposed private key to forge JWT tokens for any user in any organization, including global administrators.

## Affected Products

- casdoor — casdoor (0)

## References

- [CNA](https://github.com/geo-chen/oss/blob/main/casdoor.md#finding-3-organization-admin-can-read-the-global-built-in-jwt-signing-private-key-via-apiget-certs-and-apiget-cert-incomplete-fix-of-3003--enables-cross-organization-token-forgery)
- [CNA](https://github.com/casdoor/casdoor/blob/v4.4.0/controllers/cert.go)
- [CNA](https://github.com/casdoor/casdoor/blob/v4.4.0/object/cert.go)
- [CNA](https://github.com/casdoor/casdoor)
- [CNA](https://www.vulncheck.com/advisories/casdoor-through-4.4.0-private-key-exposure-via-certificate-endpoints)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.21%
- **EPSS Percentile:** 11.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._