{"cve":"CVE-2026-57179","nvd":{"published":"2026-09-24T18:17:15.120","modified":"2026-09-30T17:23:08.953","status":"Awaiting Analysis","description":"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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","score":4.2},"cwes":["CWE-384"],"references":["https://github.com/python-social-auth/social-core/security/advisories/GHSA-vqg6-3fw6-j9jg"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:56:02.509636177+00:00"},"epss":{"cve":"CVE-2026-57179","score":0.00158,"percentile":0.0489,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-vqg6-3fw6-j9jg","url":"https://osv.dev/vulnerability/GHSA-vqg6-3fw6-j9jg","summary":"social-auth-core has a Session Fixation issue","modified":"2026-10-01T17:56:15.854049785Z","packages":[{"ecosystem":"PyPI","name":"social-auth-core","purl":"pkg:pypi/social-auth-core","ranges":["<5.0.0"],"fixed":["5.0.0"]}]},{"id":"PYSEC-2026-4168","url":"https://osv.dev/vulnerability/PYSEC-2026-4168","summary":"social-auth-core has a Session Fixation issue","modified":"2026-10-01T17:45:16.000899294Z","packages":[{"ecosystem":"PyPI","name":"social-auth-core","purl":"pkg:pypi/social-auth-core","ranges":["<5.0.0"],"fixed":["5.0.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}