EUVD-2026-86311
GHSA-x7qq-23vw-7pfg
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Remote unauthenticated login-CSRF requiring victim interaction (UI:R); limited integrity impact only (victim authenticated as attacker), no confidentiality or availability effect, no scope change.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
2DescriptionCVE.org
Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the LoginRadius backend did not validate OAuth state during the authentication flow. Applications using this backend were vulnerable to login CSRF. An attacker could cause a victim's browser session to complete authentication using an attacker-controlled LoginRadius token, making the victim authenticated as the attacker's LoginRadius identity. The issue affects only applications using the LoginRadius backend. The issue has been fixe in version 5.0.0 by enabling callback state validation for the LoginRadius backend.
AnalysisAI
Login CSRF in the LoginRadius backend of Python Social Auth (social-core) before 5.0.0 lets an attacker complete a victim's browser session authentication against an attacker-controlled LoginRadius identity, because the OAuth state parameter is never validated during the callback. Only applications that specifically enable the LoginRadius backend are affected; per the assessed vector (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N, CVSS 4.3) the attacker must possess a valid LoginRadius token and induce user interaction, and the victim's own account is not compromised - they are simply logged in as the attacker, with no confidentiality impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the target application uses the python-social-auth LoginRadius backend specifically - applications using any other backend are unaffected. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but low-severity issue. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: upgrade to social-core 5.0.0, which enables callback state validation for the LoginRadius backend and closes the login CSRF path; this is the only complete fix. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-352 – Cross-Site Request Forgery (CSRF)
View allVendor StatusVendor
SUSE
Severity: ModerateShare
External POC / Exploit Code
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