{"cve":"CVE-2023-28131","nvd":{"published":"2023-04-24T05:15:08.653","modified":"2026-06-17T05:46:56.763","status":"Modified","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).","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","score":9.6},"cwes":["CWE-522"],"references":["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"],"products":["expo:expo_software_development_kit"],"source":"nvd","synced_at":"2026-10-19T21:38:05.473481323+00:00"},"epss":{"cve":"CVE-2023-28131","score":0.23165,"percentile":0.97767,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-wr5g-q49g-548w","url":"https://osv.dev/vulnerability/GHSA-wr5g-q49g-548w","summary":"Expo SDK has an OAuth vulnerability","modified":"2025-10-16T08:27:45.463248Z","packages":[{"ecosystem":"npm","name":"expo","purl":"pkg:npm/expo","ranges":["<48.0.0"],"fixed":["48.0.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}