CVE-2026-57179

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.

CVSS v3 4.2 MEDIUM

4.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/python-social-auth/social-core/security/advisories/GHSA-vqg6-3fw6-j9jg

Configurations

No configuration.

History

24 Sep 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-24 18:17

Updated : 2026-09-30 17:23

NVD link : CVE-2026-57179

Mitre link : CVE-2026-57179

CVE.ORG link : CVE-2026-57179

JSON object : View

Products Affected

No product.

CWE

CWE-384

Session Fixation

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