MaxKey contains an unauthorized access vulnerability due to a hard-coded JWT signing secret in application-maxkey.properties that allows unauthenticated attackers to forge valid JWT tokens and authenticate as any user by exploiting the password-skipped login endpoint. Attackers can craft a JWT token signed with the publicly known default secret, submit it to the /sign/login/jwt/trust endpoint, and obtain a fully authenticated admin session with access to SSO application configuration and downstream application secrets.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/dromara/MaxKey
disclosure@vulncheck.com
https://github.com/dromara/MaxKey/commit/6cda394ec111f03a06fb2eed0de74f787d68bd…
disclosure@vulncheck.com
https://github.com/dromara/MaxKey/issues/270
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/maxkey-hard-coded-jwt-secret-unauthorized-…
disclosure@vulncheck.com