social-auth-core Vulnerable to Account Takeover via Identity Binding Flaw in Vend Backend

ImpactThe Vend OAuth2 backend used only the numeric Vend userid as the social-auth UID.When multiple Vend shops authenticate through the same application, users from different shops with the same internal Vend user ID could collide in the social-auth association table. A user from one shop could...

PYSEC-2026-4166 social-auth-core Vulnerable to Account Takeover via Identity Binding Flaw in Vend Backend

Impact The Vend OAuth2 backend used only the numeric Vend userid as the social-auth UID. When multiple Vend shops authenticate through the same application, users from different shops with the same internal Vend user ID could collide in the social-auth association table. A user from one shop coul...

social-auth-core Vulnerable to Account Takeover via Identity Binding Flaw in Vend Backend

Impact The Vend OAuth2 backend used only the numeric Vend userid as the social-auth UID. When multiple Vend shops authenticate through the same application, users from different shops with the same internal Vend user ID could collide in the social-auth association table. A user from one shop coul...

GHSA-FP7W-M676-W7GC social-auth-core Vulnerable to Account Takeover via Identity Binding Flaw in Vend Backend

Impact The Vend OAuth2 backend used only the numeric Vend userid as the social-auth UID. When multiple Vend shops authenticate through the same application, users from different shops with the same internal Vend user ID could collide in the social-auth association table. A user from one shop coul...

CVE-2026-57176 social-auth-core Vulnerable to Account Takeover via Identity Binding Flaw in Vend Backend

Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the Vend OAuth2 backend used only the numeric Vend userid as the social-auth UID. When multiple Vend shops authenticate through the same application, users from different shops with the same internal Ven...

CVE-2026-57176 social-auth-core Vulnerable to Account Takeover via Identity Binding Flaw in Vend Backend

Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the Vend OAuth2 backend used only the numeric Vend userid as the social-auth UID. When multiple Vend shops authenticate through the same application, users from different shops with the same internal Ven...

CVE-2026-57176 social-auth-core Vulnerable to Account Takeover via Identity Binding Flaw in Vend Backend

Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the Vend OAuth2 backend used only the numeric Vend userid as the social-auth UID. When multiple Vend shops authenticate through the same application, users from different shops with the same internal Ven...

CVE-2026-57176

The Python Social Auth library is vulnerable to account takeover in its Vend OAuth2 backend prior to version 5.0.0 . The root cause is an identity binding flaw where the backend uses only the numeric user_id as the social-auth UID. When multiple Vend shops are integrated into the same application...