CVE-2026-57178 social-auth-core: VK App backend accepts unsigned callback data when auth_key is missing

Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the vk-app backend accepted VK application callback data without verifying the callback signature when the authkey parameter was omitted. Applications using this backend could treat unsigned...

CVE-2026-57178

Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the vk-app backend accepted VK application callback data without verifying the callback signature when the authkey parameter was omitted. Applications using this backend could treat unsigned...

CVE-2026-57177

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...

EUVD-2026-86311

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...

CVE-2026-57177 social-auth-core has Login CSRF via Missing State Parameter in LoginRadius Backend

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...

CVE-2026-57177 social-auth-core has Login CSRF via Missing State Parameter in LoginRadius Backend

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...

CVE-2026-57177 social-auth-core has Login CSRF via Missing State Parameter in LoginRadius Backend

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...

CVE-2026-57177

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...

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...

EUVD-2026-86310

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

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...

CVE-2026-57176

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-2026-57175

Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the SAML backend accepted SAML responses on the Assertion Consumer Service endpoint without verifying that they matched a previously issued "AuthnRequest". Applications using SAML account association cou...

CVE-2026-57175 social-auth-core has an Improper Authentication issue

Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the SAML backend accepted SAML responses on the Assertion Consumer Service endpoint without verifying that they matched a previously issued AuthnRequest. Applications using SAML account association could...

EUVD-2026-86309

Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the SAML backend accepted SAML responses on the Assertion Consumer Service endpoint without verifying that they matched a previously issued AuthnRequest. Applications using SAML account association could...

CVE-2026-57175 social-auth-core has an Improper Authentication issue

Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the SAML backend accepted SAML responses on the Assertion Consumer Service endpoint without verifying that they matched a previously issued AuthnRequest. Applications using SAML account association could...

CVE-2026-57175 social-auth-core has an Improper Authentication issue

Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the SAML backend accepted SAML responses on the Assertion Consumer Service endpoint without verifying that they matched a previously issued AuthnRequest. Applications using SAML account association could...

CVE-2026-57175

Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the SAML backend accepted SAML responses on the Assertion Consumer Service endpoint without verifying that they matched a previously issued AuthnRequest. Applications using SAML account association could...