ZITADEL is an open source identity management platform. Prior to 4.15.3, ZITADEL's external identity provider handler checks that the local user's email is verified but does not verify that the external IdP confirmed ownership of the same email before auto-linking by email, allowing a permissive provider account with a victim email address to be linked to the victim's local account. This issue is fixed in version 4.15.3.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 3
https://github.com/zitadel/zitadel/commit/c97012f0c5dc2fe960ae6e940cbea23229f05…
security-advisories@github.com
https://github.com/zitadel/zitadel/releases/tag/v4.15.3
security-advisories@github.com
https://github.com/zitadel/zitadel/security/advisories/GHSA-992q-9gwp-7r79
security-advisories@github.com