CVE-2023-28131: Expo Software Development Kit

Critical severity, CVSS 9.6. EPSS: 23.2% chance of exploitation in the next 30 days.

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 products

• Expo Expo Software Development Kit: from 45.0.0, before 48.0.0 (fixed in 48.0.0)

Published 2023-04-24. Last modified 2026-06-17.