GHSA-3C93-F73F-QC9H social-auth-core: VK App backend accepts unsigned callback data when auth_key is missing

Impact 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 attacker-controlled data as a verified VK identity. An attacker could choose callback fields such a...

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

Impact 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 attacker-controlled data as a verified VK identity. An attacker could choose callback fields such a...

Improper Verification of Cryptographic Signature

Overview social-auth-core is a package that makes Python social authentication simple. Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via the authcomplete method in the VKAppOAuth2 backend, where the authkey signature is not required to be...

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

Impact 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 victi...

GHSA-X7QQ-23VW-7PFG social-auth-core has Login CSRF via Missing State Parameter in LoginRadius Backend

Impact 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 victi...

Cross-site Request Forgery (CSRF)

Overview social-auth-core is a package that makes Python social authentication simple. Affected versions of this package are vulnerable to Cross-site Request Forgery CSRF via the LoginRadiusAuth backend in socialcore/backends/loginradius.py, which sets REDIRECTSTATE = False and STATEPARAMETER =...

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...

Authentication Bypass by Alternate Name

Overview social-auth-core is a package that makes Python social authentication simple. Affected versions of this package are vulnerable to Authentication Bypass by Alternate Name via the getuserid method in the Vend OAuth2 backend socialcore/backends/vend.py, where user identifiers are scoped onl...

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...

social-auth-core has an Improper Authentication issue

Impact 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 allow an attacker with a valid account on a trusted IdP to link the attacker's SAML...

Improper Validation of Integrity Check Value

Overview social-auth-core is a package that makes Python social authentication simple. Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value via the SAML authentication backend socialcore/backends/saml.py, which fails to validate SAML responses against t...

GHSA-VQ6G-G6C7-5F2J social-auth-core has an Improper Authentication issue

Impact 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 allow an attacker with a valid account on a trusted IdP to link the attacker's SAML...

CVE-2026-57179

A flaw was found in social-auth-core. The partial-pipeline resume mechanism processes partial authentication tokens without binding them to the originating browser session. A remote attacker can exploit this vulnerability by initiating an authentication flow to obtain a token and inducing a victi...

CVE-2026-57176

A flaw was found in social-auth-core. An identity binding weakness in the Vend OAuth2 authentication backend allows an authenticated remote attacker to gain unauthorized access to another user's account. Because the backend relies solely on numeric user identifiers without scoping them to specifi...

CVE-2026-57177

A flaw was found in social-auth-core. The LoginRadius authentication backend fails to validate the state parameter during the authentication flow, resulting in a login Cross-Site Request Forgery CSRF vulnerability. A remote attacker could exploit this by tricking a user into completing...

CVE-2026-57175

A flaw was found in social-auth-core. The Security Assertion Markup Language SAML backend accepts authentication responses without verifying that they correspond to a previously issued authentication request. A remote authenticated attacker with a valid account on a trusted Identity Provider IdP...

CVE-2026-57178

A flaw was found in social-auth-core. The VK application backend accepts callback data without verifying its cryptographic signature when the authentication key parameter is omitted. A remote attacker can exploit this vulnerability by submitting crafted callback requests with forged identity...

CVE-2026-57179

Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the partial-pipeline resume mechanism accepted partialtoken as a bearer credential without binding it to the browser session that created it. Applications using resumable partial pipeline steps could all...

DEBIAN-CVE-2026-57179

Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the partial-pipeline resume mechanism accepted partialtoken as a bearer credential without binding it to the browser session that created it. Applications using resumable partial pipeline steps could all...

DEBIAN-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...