CVE-2023-28131
CRITICAL9.6EPSS 0.83%Expo SDK has an OAuth vulnerability
Published: 4/24/2023Modified: 10/16/2025
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).
Affected packages (1)
- npm/expofrom 0, < 48.0.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
References (4)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2023-28131
- PATCHhttps://github.com/expo/expo
- WEBhttps://blog.expo.dev/security-advisory-for-developers-using-authsessions-useproxy-options-and-auth-expo-io-e470fe9346df
- WEBhttps://www.darkreading.com/endpoint/oauth-flaw-in-expo-platform-affects-hundreds-of-third-party-sites-apps