{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-115910", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-23T20:21:45.106Z", "datePublished": "2026-10-26T16:44:34.337Z", "dateUpdated": "2026-10-26T16:44:34.337Z"}, "containers": {"cna": {"title": "Python Social Auth: OpenID Connect nonce is not bound to the browser session, so a stolen authorization code logs the attacker in as the victim", "problemTypes": [{"descriptions": [{"cweId": "CWE-345", "lang": "en", "description": "CWE-345: Insufficient Verification of Data Authenticity", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-384", "lang": "en", "description": "CWE-384: Session Fixation", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/python-social-auth/social-core/security/advisories/GHSA-h2r5-x5m7-3935", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/python-social-auth/social-core/security/advisories/GHSA-h2r5-x5m7-3935"}, {"name": "https://github.com/python-social-auth/social-core/pull/2141", "tags": ["x_refsource_MISC"], "url": "https://github.com/python-social-auth/social-core/pull/2141"}, {"name": "https://github.com/python-social-auth/social-core/commit/c2f2ae4663bef19ee8b07f2cf5a2344f9155d826", "tags": ["x_refsource_MISC"], "url": "https://github.com/python-social-auth/social-core/commit/c2f2ae4663bef19ee8b07f2cf5a2344f9155d826"}, {"name": "https://github.com/python-social-auth/social-core/releases/tag/6.2.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/python-social-auth/social-core/releases/tag/6.2.0"}], "affected": [{"vendor": "python-social-auth", "product": "social-core", "versions": [{"version": "< 6.2.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-26T16:44:34.337Z"}, "descriptions": [{"lang": "en", "value": "Python Social Auth is a social authentication and registration mechanism. Prior to 6.2.0, OpenIdConnectAuth in social_core/backends/open_id_connect.py uses get_and_store_nonce to place the OpenID Connect nonce in a shared OpenIdConnectAssociation table, and get_nonce and validate_claims verify only that the nonce exists and has not expired rather than binding it to the browser session and OAuth state that initiated the login. An attacker who obtains a victim's unused authorization code can start a separate login to obtain valid state for the attacker's browser, submit the victim's code with that state, and pass nonce validation because the victim nonce is globally available. With DEFAULT_USE_PKCE disabled in the default OpenIdConnectAuth configuration, the attacker can be logged in as the victim. This issue is fixed in version 6.2.0."}], "source": {"advisory": "GHSA-h2r5-x5m7-3935", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "social-core", "vendor": "python-social-auth", "versions": [{"status": "affected", "version": "< 6.2.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Python Social Auth is a social authentication and registration mechanism. Prior to 6.2.0, OpenIdConnectAuth in social_core/backends/open_id_connect.py uses get_and_store_nonce to place the OpenID Connect nonce in a shared OpenIdConnectAssociation table, and get_nonce and validate_claims verify only that the nonce exists and has not expired rather than binding it to the browser session and OAuth state that initiated the login. An attacker who obtains a victim's unused authorization code can start a separate login to obtain valid state for the attacker's browser, submit the victim's code with that state, and pass nonce validation because the victim nonce is globally available. With DEFAULT_USE_PKCE disabled in the default OpenIdConnectAuth configuration, the attacker can be logged in as the victim. This issue is fixed in version 6.2.0."}], "id": "CVE-2026-115910", "lastModified": "2026-10-26T17:17:18.597", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-26T17:17:18.597", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/python-social-auth/social-core/commit/c2f2ae4663bef19ee8b07f2cf5a2344f9155d826"}, {"source": "security-advisories@github.com", "url": "https://github.com/python-social-auth/social-core/pull/2141"}, {"source": "security-advisories@github.com", "url": "https://github.com/python-social-auth/social-core/releases/tag/6.2.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/python-social-auth/social-core/security/advisories/GHSA-h2r5-x5m7-3935"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-345"}, {"lang": "en", "value": "CWE-384"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}