Answer in brief
CVE-2026-57179 records a Medium severity (CVSS 4.2) vulnerability in social-auth-core has a Session Fixation issue. The current sources do not mark it as known exploited. The current feed maps python-social-auth/social-core (generic), social-auth-core (pip), social-auth-core (pypi). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 4.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps python-social-auth/social-core (generic), social-auth-core (pip), social-auth-core (pypi). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| python-social-auth/social-coregeneric | <5.0.0 | 5.0.0 |
| social-auth-corepip | <5.0.0 | 5.0.0 |
| social-auth-corepypi | >=0 <5.0.0 | 5.0.0 |
Published upstream
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 25, 2026
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.
Quoted source text, attributed separately from HOL analysis.