{"id":"DEBIAN-CVE-2026-57179","details":"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.","modified":"2026-09-26T10:00:08.448269855Z","published":"2026-09-24T18:17:15.120Z","upstream":["CVE-2026-57179"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-57179"}],"affected":[{"package":{"name":"social-auth-core","ecosystem":"Debian:12","purl":"pkg:deb/debian/social-auth-core?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.0-1","4.4.2-1","4.4.2-2","4.5.3-1","4.5.4-1","4.5.6-1","4.6.1-1","4.8.1-1","4.8.3-1","4.8.5-1","4.8.7-1","4.9.1-1","5.0.2-1","5.1.0-1","5.1.0-2","5.1.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-57179.json"}},{"package":{"name":"social-auth-core","ecosystem":"Debian:13","purl":"pkg:deb/debian/social-auth-core?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.6.1-1","4.8.1-1","4.8.3-1","4.8.5-1","4.8.7-1","4.9.1-1","5.0.2-1","5.1.0-1","5.1.0-2","5.1.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-57179.json"}},{"package":{"name":"social-auth-core","ecosystem":"Debian:14","purl":"pkg:deb/debian/social-auth-core?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.0.2-1"}]}],"versions":["4.6.1-1","4.8.1-1","4.8.3-1","4.8.5-1","4.8.7-1","4.9.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-57179.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N"}]}