CVE-2025-61783

Python Social Auth is a social authentication/registration mechanism. In versions prior to 5.6.0, upon authentication, the user could be associated by e-mail even if the `associate_by_email` pipeline was not included. This could lead to account compromise when a third-party authentication service does not validate provided e-mail addresses or doesn't require unique e-mail addresses. Version 5.6.0 contains a patch. As a workaround, review the authentication service policy on e-mail addresses; many will not allow exploiting this vulnerability.

• https://github.com/python-social-auth/social-app-django/commit/10c80e2ebabeccd4e9c84ad0e16e1db74148ed4c
• https://github.com/python-social-auth/social-app-django/issues/220
• https://github.com/python-social-auth/social-app-django/issues/231
• https://github.com/python-social-auth/social-app-django/issues/634
• https://github.com/python-social-auth/social-app-django/pull/803
• https://github.com/python-social-auth/social-app-django/security/advisories/GHSA-wv4w-6qv2-qqfg
• https://github.com/python-social-auth/social-app-django/issues/220
• https://github.com/python-social-auth/social-app-django/issues/231
• https://github.com/python-social-auth/social-app-django/issues/634