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[ CVE-2026-57177 · Published 24 Sep 2026 ]

social-auth-core has Login CSRF via Missing State Parameter in LoginRadius Backend

CVSS 4.3 EPSS <1%Fix available

[ Description ]Official description

Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the LoginRadius backend did not validate OAuth state during the authentication flow. Applications using this backend were vulnerable to login CSRF. An attacker could cause a victim's browser session to complete authentication using an attacker-controlled LoginRadius token, making the victim authenticated as the attacker's LoginRadius identity. The issue affects only applications using the LoginRadius backend. The issue has been fixe in version 5.0.0 by enabling callback state validation for the LoginRadius backend.

[ Fixes ]Fixes and patches

  • social-auth-core 5.0.0Fixed version · GitHub Advisories · pip package social-auth-core: upgrade to 5.0.0 or later (affected < 5.0.0)

[ Packages ]Affected open-source packages

[ References ]References