CVE-2026-57179
Python Social Auth is a social authentication/registration mechanism.
Impact
Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the partial-pipeline resume mechanism accepted `partial_token` as a bearer credential without binding it to the browser session that created it. Applications using resumable partial pipeline steps could allow an attacker to start an authentication flow, obtain a valid partial token and verification data, and cause a victim's browser to resume that attacker-controlled flow. This could authenticate the victim's browser as the attacker's account. The issue affects applications using partial pipeline steps such as `mail_validation` or custom steps decorated with `@partial`. The issue has been fixed in version 5.0.0 by binding partial pipeline resumes to the originating browser session.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | social-auth-core | < 5.0.0 | 5.0.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-vqg6-3fw6-j9jg
- https://github.com/python-social-auth/social-core/security/advisories/GHSA-vqg6-3fw6-j9jg
- https://nvd.nist.gov/vuln/detail/CVE-2026-57179
- https://github.com/python-social-auth/social-core/pull/1816
- https://github.com/python-social-auth/social-core/commit/0418782454ac7bbc6a9230ea21f7f5066fe89686
- https://github.com/python-social-auth/social-core/releases/tag/5.0.0