---
cve: "CVE-2026-57179"
severity: "MEDIUM"
cvss: 4.2
epss: "6.3%"
vendor: "python-social-auth"
kev: false
exploited: false
published: "2026-09-24 18:17:15"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-25T12:45:06+02:00"
---

# CVE-2026-57179

> 4.2 MEDIUM · 🧪 PoC

## Beschreibung

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-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Erforderlich | good |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 29dffe68c7c23f3d5cb5e051e7cb40447ffb55d5 (Commit)

## Referenzen

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

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-57179) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_