Vulnerability · Published Sep 24, 2026 · Assigned by GitHub_M
CVE-2026-57177social-auth-core has Login CSRF via Missing State Parameter in LoginRadius Backend
Medium 4.3
In plain English
A medium-severity cross-site request forgery in social-core from python-social-auth. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | social-auth-core | no fix listed | DEBIAN-CVE-2026-57177 |
| Debian:13 | social-auth-core | no fix listed | DEBIAN-CVE-2026-57177 |
| Debian:14 | social-auth-core | 5.0.2-1 | DEBIAN-CVE-2026-57177 |
| PyPI | social-auth-core | 5.0.0 | GHSA-x7qq-23vw-7pfg |
| PyPI | social-auth-core | 5.0.0 | PYSEC-2026-4169 |
| Ubuntu:22.04:LTS | python3.10 | no fix listed | UBUNTU-CVE-2026-57177 |
| Ubuntu:24.04:LTS | python3.12 | no fix listed | UBUNTU-CVE-2026-57177 |
| Ubuntu:26.04:LTS | python3.14 | no fix listed | UBUNTU-CVE-2026-57177 |
| Ubuntu:26.10 | python3.14 | no fix listed | UBUNTU-CVE-2026-57177 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| python-social-auth | social-core | < 5.0.0 |
Weakness: CWE-352 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N