---
id: CVE-2026-57179
title: Python Social Auth is a social authentication/registration mechanism
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…
severity: medium
cvss: 4.2
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N'
cwe:
  - CWE-384
  - CWE-613
vendor: python-social-auth
product: social-core
affected:
  - social-core < 5.0.0
published: '2026-09-24'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T19:17:14.510'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-57179'
references:
  - url: >-
      https://github.com/python-social-auth/social-core/security/advisories/GHSA-vqg6-3fw6-j9jg
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-57179'
  - url: 'https://github.com/python-social-auth/social-core/pull/1816'
  - url: >-
      https://github.com/python-social-auth/social-core/commit/0418782454ac7bbc6a9230ea21f7f5066fe89686
  - url: 'https://github.com/python-social-auth/social-core/releases/tag/5.0.0'
  - url: 'https://github.com/advisories/GHSA-vqg6-3fw6-j9jg'
  - url: 'https://github.com/python-social-auth/social-core'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-57179.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-57179'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2540614'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-57179'
tags:
  - nvd
  - cve.org
  - ghsa
  - pip
  - osv
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-24T18:10:50.898479Z'
ingestedAt: '2026-09-24T17:48:30.403Z'
aliases:
  - GHSA-vqg6-3fw6-j9jg
ecosystem: pip
patched:
  - social-auth-core 5.0.0
epss: 0.00158
epssPercentile: 0.04184
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-57179)

Affected packages:

- `social-auth-core < 5.0.0`

Patched in:

- `social-auth-core 5.0.0`

Source: https://github.com/advisories/GHSA-vqg6-3fw6-j9jg

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Ansible Automation Platform 2 · no fix planned: Red Hat Ansible Automation Platform 2 · updated 2026-09-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-57179.json)