{
    "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"
            }
        }
    }
}