CVE-2026-90942

critical

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.

References

https://www.vulncheck.com/advisories/casdoor-through-4.4.0-private-key-exposure-via-certificate-endpoints

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

https://github.com/casdoor/casdoor/blob/v4.4.0/object/cert.go

https://github.com/casdoor/casdoor/blob/v4.4.0/controllers/cert.go

https://github.com/casdoor/casdoor

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-77710

Details

Source: Mitre, NVD

Published: 2026-09-14

Updated: 2026-09-23

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 9.6

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

Severity: Critical

CVSS v4

Base Score: 9.3

Vector: 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

Severity: Critical

EPSS

EPSS: 0.00277