GHSA-vqg6-3fw6-j9jg

Suggest an improvement
Source
https://github.com/advisories/GHSA-vqg6-3fw6-j9jg
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-vqg6-3fw6-j9jg/GHSA-vqg6-3fw6-j9jg.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-vqg6-3fw6-j9jg
Aliases
Downstream
Published
2026-09-24T19:58:14Z
Modified
2026-09-24T20:15:06Z
Severity
  • 4.2 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N CVSS Calculator
Summary
social-auth-core has a Session Fixation issue
Details

Impact

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.

Patches

The issue has been fixed by binding partial pipeline resumes to the originating browser session.

Users should upgrade to a patched version.

Fix:

Workarounds

Applications that cannot upgrade immediately should disable resumable partial pipeline steps, including mail_validation and custom steps decorated with @partial.

If those flows are required, applications should avoid accepting partial resume links from untrusted contexts until a patched version can be deployed.

There is no complete workaround while continuing to use the vulnerable partial-pipeline resume mechanism.

Credits

Reported through GitHub private vulnerability reporting by Liyi Zhou, Ziyue Wang, Strick, Maurice, and Chenchen Yu from the University of Sydney security research team.

Reporter references:

Database specific 
{
    "cwe_ids": [
        "CWE-384"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-24T19:58:14Z",
    "nvd_published_at": "2026-09-24T18:17:15Z",
    "severity": "MODERATE"
}
References

Affected packages

PyPI / social-auth-core

Package

Name
social-auth-core
View open source insights on deps.dev
Purl
pkg:pypi/social-auth-core

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.0.0

Affected versions

0.*
0.0.1
0.1.0
0.2.0
0.2.1
1.*
1.0.0
1.0.1
1.1.0
1.2.0
1.3.0
1.4.0
1.5.0
1.6.0
1.7.0
2.*
2.0.0
3.*
3.0.0
3.1.0
3.2.0
3.3.0
3.3.1
3.3.2
3.3.3
3.4.0
4.*
4.0.2
4.0.3
4.1.0
4.2.0
4.3.0
4.4.0
4.4.1
4.4.2
4.5.0
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.6.0
4.6.1
4.7.0
4.8.0
4.8.1
4.8.2
4.8.3
4.8.4
4.8.5
4.8.6
4.8.7
4.9.0
4.9.1

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-vqg6-3fw6-j9jg/GHSA-vqg6-3fw6-j9jg.json"