CVE-2026-123803
Published:November 09, 2026
Updated:November 10, 2026
SuperTokens Core is an open source authentication server. From 10.1.0 until 11.0.9, 11.1.4, 11.2.4, 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, and 12.3.1, loadOptionsById_Transaction and getUserInfoByCredentialId_Transaction perform application-scoped WebAuthn lookups without constraining them to the requested tenant, and WebAuthN.signIn does not verify tenant membership. In a multi-tenant deployment using WebAuthn with a shared user pool, an ordinary user who possesses their own valid passkey in one tenant can submit its assertion to another tenant's sign-in endpoint in the same application and be authenticated there despite having no membership in the target tenant. This issue is fixed in versions 11.0.9, 11.1.4, 11.2.4, 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, and 12.3.1.
Affected Packages
https://github.com/supertokens/supertokens-postgresql-plugin.git (GITHUB):
Affected version(s) =v9.9.0-canary <v9.9.1Fix Suggestion:
Update to version v9.9.1https://github.com/supertokens/supertokens-postgresql-plugin.git (GITHUB):
Affected version(s) >=v8.1.0 <v9.6.3 || >=v9.0.0 <v9.6.3 || >=v9.1.0 <v9.6.3 || >=v9.2.0 <v9.6.3 || >=v9.3.0 <v9.6.3 || >=v9.4.0 <v9.6.3 || >=v9.5.0-canary <v9.6.3 || >=v9.6.0 <v9.6.3Fix Suggestion:
Update to version v9.6.3https://github.com/supertokens/supertokens-core.git (GITHUB):
Affected version(s) >=v12.1.0 <v12.1.2Fix Suggestion:
Update to version v12.1.2https://github.com/supertokens/supertokens-postgresql-plugin.git (GITHUB):
Affected version(s) =v9.8.0 <v9.8.1Fix Suggestion:
Update to version v9.8.1https://github.com/supertokens/supertokens-core.git (GITHUB):
Affected version(s) =v12.3.0-canary <v12.3.1Fix Suggestion:
Update to version v12.3.1https://github.com/supertokens/supertokens-core.git (GITHUB):
Affected version(s) >=v10.1.0 <v11.0.9 || >=v11.0.0 <v11.0.9Fix Suggestion:
Update to version v11.0.9https://github.com/supertokens/supertokens-core.git (GITHUB):
Affected version(s) >=v11.1.0 <v11.1.4Fix Suggestion:
Update to version v11.1.4https://github.com/supertokens/supertokens-core.git (GITHUB):
Affected version(s) >=v12.0.0-canary <v12.0.11Fix Suggestion:
Update to version v12.0.11https://github.com/supertokens/supertokens-core.git (GITHUB):
Affected version(s) =v12.2.0 <v12.2.1Fix Suggestion:
Update to version v12.2.1https://github.com/supertokens/supertokens-core.git (GITHUB):
Affected version(s) >=v11.4.0 <v11.4.8Fix Suggestion:
Update to version v11.4.8https://github.com/supertokens/supertokens-core.git (GITHUB):
Affected version(s) >=v11.3.0 <v11.3.8Fix Suggestion:
Update to version v11.3.8https://github.com/supertokens/supertokens-core.git (GITHUB):
Affected version(s) >=v11.2.0 <v11.2.4Fix Suggestion:
Update to version v11.2.4https://github.com/supertokens/supertokens-postgresql-plugin.git (GITHUB):
Affected version(s) >=v9.7.0 <v9.7.2Fix Suggestion:
Update to version v9.7.2Related Resources (20)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.6
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE