{"id":"CVE-2023-28131","aliases":["EUVD-2023-31842","GHSA-wr5g-q49g-548w"],"status":"published","title":"Expo SDK has an OAuth vulnerability","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).","severity":{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.23165,"percentile":0.97775,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-522"],"published":"2023-04-24T00:00:00Z","modified":"2026-06-17T05:46:56Z","fixes":[{"ecosystem":"npm","package":"expo","fixed_in":["48.0.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"expo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"48.0.0"}]}]},{"source":"osv","ecosystem":"npm","package":"expo","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"48.0.0"}]}]}],"products":[{"vendor":"expo","product":"expo_software_development_kit"},{"vendor":"expo.io","product":"expo authsession module"}],"references":[{"url":"https://blog.expo.dev/security-advisory-for-developers-using-authsessions-useproxy-options-and-auth-expo-io-e470fe9346df","tags":["x_transferred","Mitigation","Third Party Advisory","web"]},{"url":"https://www.darkreading.com/endpoint/oauth-flaw-in-expo-platform-affects-hundreds-of-third-party-sites-apps","tags":["x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-28131","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-wr5g-q49g-548w"},{"url":"https://github.com/expo/expo","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-28131","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).","status":"published","published":"2023-04-24T00:00:00Z","modified":"2025-02-04T16:33:56.283Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-522"],"updated_at":"2026-11-02T14:35:32.752775Z"}],"euvd":[{"id":"EUVD-2023-31842","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).","status":"published","published":"2023-04-24T00:00:00Z","modified":"2025-02-04T16:33:56Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:04:06.358066Z"}],"ghsa":[{"id":"GHSA-wr5g-q49g-548w","title":"Expo SDK has an OAuth vulnerability","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).","status":"published","published":"2023-04-24T06:31:20Z","modified":"2025-10-15T18:55:36Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-522"],"updated_at":"2026-11-02T14:39:01.677422Z"}],"nvd":[{"id":"CVE-2023-28131","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).","status":"published","published":"2023-04-24T05:15:08.653Z","modified":"2026-06-17T05:46:56.763Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-522"],"updated_at":"2026-11-02T14:07:56.683259Z"}],"osv":[{"id":"GHSA-wr5g-q49g-548w","title":"Expo SDK has an OAuth vulnerability","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).","status":"published","published":"2023-04-24T06:31:20Z","modified":"2025-10-16T08:27:45.463248Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-522"],"updated_at":"2026-11-02T15:46:59.131095Z"}]}}