{
    "id": "CVE-2023-28131",
    "published": "2023-04-24 05:15:08",
    "last_modified": "2026-06-17 05:46:56",
    "cvss_score": "9.6",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
    "cwe": "CWE-522",
    "description": "A vulnerability in the expo.io framework allows an attacker to take over accounts and steal credentials on an application/website that configured the \"Expo AuthSession Redirect Proxy\" for social sign-in. This can be achieved once a victim clicks a malicious link. The link itself may be sent to the victim in various ways (including email, text message, an attacker-controlled website, etc).",
    "epss_score": "0.23165",
    "epss_percentile": "0.97709",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-03 18:17:37",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 23.2% — above the 10% action threshold."
    },
    "products": [
        {
            "vendor": "expo",
            "product": "expo_software_development_kit"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://blog.expo.dev/security-advisory-for-developers-using-authsessions-useproxy-options-and-auth-expo-io-e470fe9346df",
        "https://www.darkreading.com/endpoint/oauth-flaw-in-expo-platform-affects-hundreds-of-third-party-sites-apps",
        "https://blog.expo.dev/security-advisory-for-developers-using-authsessions-useproxy-options-and-auth-expo-io-e470fe9346df",
        "https://www.darkreading.com/endpoint/oauth-flaw-in-expo-platform-affects-hundreds-of-third-party-sites-apps"
    ]
}