Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the SAML backend accepted SAML responses on the Assertion Consumer Service endpoint without verifying that they matched a previously issued `AuthnRequest`. Applications using SAML account association could allow an attacker with a valid account on a trusted IdP to link the attacker's SAML identity to a logged-in victim's local account. The attacker could then authenticate through SAML and gain access to the victim's account. The issue affects applications using the SAML backend together with authenticated account association. The issue has been fixed in version 5.0.0 by validating SAML responses against stored `AuthnRequest` IDs.
Metrics
Affected Vendors & Products
References
History
Mon, 05 Oct 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Fri, 25 Sep 2026 14:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Python-social-auth
Python-social-auth social-core |
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| Vendors & Products |
Python-social-auth
Python-social-auth social-core |
Fri, 25 Sep 2026 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-303 | |
| References |
| |
| Metrics |
threat_severity
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threat_severity
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Thu, 24 Sep 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the SAML backend accepted SAML responses on the Assertion Consumer Service endpoint without verifying that they matched a previously issued `AuthnRequest`. Applications using SAML account association could allow an attacker with a valid account on a trusted IdP to link the attacker's SAML identity to a logged-in victim's local account. The attacker could then authenticate through SAML and gain access to the victim's account. The issue affects applications using the SAML backend together with authenticated account association. The issue has been fixed in version 5.0.0 by validating SAML responses against stored `AuthnRequest` IDs. | |
| Title | social-auth-core has an Improper Authentication issue | |
| Weaknesses | CWE-287 | |
| References |
| |
| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-09-24T17:11:49.925Z
Updated: 2026-10-05T15:33:16.020Z
Reserved: 2026-06-24T01:47:55.286Z
Link: CVE-2026-57175
Updated: 2026-10-05T14:53:06.279Z
Status : Awaiting Analysis
Published: 2026-09-24T18:17:14.523
Modified: 2026-10-05T16:17:14.443
Link: CVE-2026-57175