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OpenAdvisories
Medium · 4.3 CVE-2026-57177 EUVD-2026-86311GHSA-x7qq-23vw-7pfgPYSEC-2026-4169

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

Published Sep 24, 2026 · Updated Oct 5, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
python-social-auth social-core < 5.0.0 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 social-auth-core 5.0.2-1 —
Debian 13 social-auth-core No fix yet —
Debian 12 social-auth-core No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 python3.14 No fix yet —
Ubuntu 26.04 LTS python3.14 No fix yet —
Ubuntu 24.04 LTS python3.12 No fix yet —
Ubuntu 22.04 LTS python3.10 No fix yet —
Show 5 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 22.04 LTS python2.7 +1 No fix yet —
Ubuntu Pro 20.04 LTS python2.7 +2 No fix yet —
Ubuntu Pro 18.04 LTS python2.7 +3 No fix yet —
Ubuntu Pro 16.04 LTS python2.7 +1 No fix yet —
Ubuntu Pro 14.04 LTS python2.7 +2 No fix yet —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI social-auth-core < 5.0.0 5.0.0 GHSA-x7qq-23vw-7pfg

References