{"id":"CVE-2023-28131","aliases":[],"url":"https://o3.security/vulnerability/CVE-2023-28131","summary":"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\"…","details":"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).","published":"2023-04-24T05:15:08.653","modified":"2026-06-17T05:46:56.763","cvss":{"score":9.6,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://blog.expo.dev/security-advisory-for-developers-using-authsessions-useproxy-options-and-auth-expo-io-e470fe9346df"},{"type":"WEB","url":"https://www.darkreading.com/endpoint/oauth-flaw-in-expo-platform-affects-hundreds-of-third-party-sites-apps"},{"type":"ADVISORY","url":"https://blog.expo.dev/security-advisory-for-developers-using-authsessions-useproxy-options-and-auth-expo-io-e470fe9346df"},{"type":"WEB","url":"https://www.darkreading.com/endpoint/oauth-flaw-in-expo-platform-affects-hundreds-of-third-party-sites-apps"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-06-17T05:46:56.763"}}