Logto through 1.42.0 contains a server-side request forgery vulnerability in the OIDC SSO connector creation endpoint that fails to validate the issuer URL parameter. Tenant administrators with Management API credentials can supply arbitrary internal URLs to trigger HTTP GET requests to private network services, with response content returned in API responses.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 5
https://github.com/logto-io/logto
disclosure@vulncheck.com
https://github.com/logto-io/logto/blob/v1.42.0/packages/core/src/sso/OidcConnec…
disclosure@vulncheck.com
https://github.com/logto-io/logto/commit/16f4b2e732d5114ac98646c9370ec6ab61d6ed…
disclosure@vulncheck.com
https://github.com/logto-io/logto/issues/9465
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/logto-server-side-request-forgery-via-oidc…
disclosure@vulncheck.com