social-auth-core has a Session Fixation issue
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-384.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| python-social-auth | social-core | before 5.0.0 | 5.0.0 | Patch available | CNA |
| — | social-auth-core (PyPI) | before 5.0.0 | 5.0.0 | Patch available | GHSA-vqg6-3fw6-j9jg |
- social-core Vendorpython-social-auth Affected before 5.0.0 Fixed in 5.0.0 Patch available CNA
- social-auth-core (PyPI) Vendor— Affected before 5.0.0 Fixed in 5.0.0 Patch available GHSA-vqg6-3fw6-j9jg
Remediation
- Fix · CNA social-core (python-social-auth) Fixed in 5.0.0
- Fix · GHSA-vqg6-3fw6-j9jg social-auth-core (PyPI) Fixed in 5.0.0 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-57179
- 2026-10-03 Alias added: GHSA-vqg6-3fw6-j9jg
References
Other 5
- https://github.com/python-social-auth/social-core/security/advisories/GHSA-vqg6-3fw6-j9jg
- 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
- https://github.com/python-social-auth/social-core/releases/tag/5.0.0
More python-social-auth vulnerabilities
- TI-2026-80499 OpenID Connect nonce not bound to session in Python Social Auth CVSS 3.1MEDIUM 6.8
- TI-2025-38176 Python Social Auth - Django has unsafe account association CVSS 4.0MEDIUM 6.3
- TI-2026-41144 social-auth-core: VK App backend accepts unsigned callback data when auth_key is missing CVSS 3.1HIGH 7.4
- TI-2026-41142 social-auth-core Vulnerable to Account Takeover via Identity Binding Flaw in Vend Backend CVSS 3.1MEDIUM 6.8
- TI-2026-41141 social-auth-core has an Improper Authentication issue CVSS 3.1MEDIUM 6.4
- TI-2026-74654 Login CSRF in Python Social Auth LINE backend CVSS 3.1MEDIUM 6.5
Sources
- CVE-2026-57179 · CVE Program
- CVE-2026-57179 · NVD
- FIRST EPSS
- GHSA-vqg6-3fw6-j9jg · GitHub Advisory Database · CC BY 4.0
- CVE-2026-57179 · Red Hat security data · CC BY 4.0
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