Bug 2571866 (CVE-2026-126775)

Summary: CVE-2026-126775 social-auth-core: social-auth-core: Information disclosure via login cross-site request forgery in SAML
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: jlanda, jmitchel, jwong, kshier, rbobbitt, simaishi, stcannon, tguha, yguenane
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in social-auth-core. This vulnerability allows a remote attacker to cause information disclosure through a login Cross-Site Request Forgery (CSRF) in the Security Assertion Markup Language (SAML) authentication handler. By delivering a valid Identity Provider (IdP) response with an unsigned RelayState parameter, an attacker can trick a victim into authenticating into the attacker's account and capture any sensitive data entered during the session.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-11-11 18:51:45 UTC
Social-auth-core 4.7.0 before 7.0.0 contains a login cross-site request forgery vulnerability in the SAML backend that restores sessions named in the unsigned RelayState parameter. Attackers can deliver their own valid IdP response and RelayState to a victim's browser via an auto-submitting form, signing the victim into the attacker's account to capture entered data.