GHSA-x7qq-23vw-7pfg
social-auth-core has Login CSRF via Missing State Parameter in LoginRadius Backend
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| PyPI | social-auth-core | < 5.0.0 | 5.0.0 |
Details
As written in the advisory (Markdown source, shown as plain text).
### 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 victim authenticated as the attacker's LoginRadius identity.
The issue affects only applications using the LoginRadius backend.
### Patches
The issue has been fixed by enabling callback state validation for the LoginRadius backend.
Users should upgrade to a patched version.
Fix:
* https://github.com/python-social-auth/social-core/pull/1808
### Workarounds
Applications that cannot upgrade immediately should disable the LoginRadius backend by removing it from `SOCIAL_AUTH_AUTHENTICATION_BACKENDS`.
There is no complete workaround while continuing to use the vulnerable backend.
### Credits
Reported through GitHub private vulnerability reporting by Liyi Zhou, Ziyue Wang, Strick, Maurice, and Chenchen Yu from the University of Sydney security research team.
Reporter references:
* https://lzhou1110.github.io/
* https://zyy0530.github.io/
* https://str1ckl4nd.github.io/
* https://maurice.busystar.org/
* https://7thparkk.github.io/
References
External links from the advisory. They lead to third-party sites.
- https://github.com/python-social-auth/social-core/security/advisories/GHSA-x7qq-23vw-7pfg
- https://nvd.nist.gov/vuln/detail/CVE-2026-57177
- https://github.com/python-social-auth/social-core/pull/1808
- https://github.com/python-social-auth/social-core/commit/4d332820e6b0583fde522956105a0e2beced5335
- https://github.com/python-social-auth/social-core
- https://github.com/python-social-auth/social-core/releases/tag/5.0.0