CVE-2026-121802 @better-auth/expo before 1.7.16 allows certain account-takeover outcomes (e.g., unauthenticated changes of any account's email address), because it signs a caller-supplied state value without checking...
CriticalCVSS 9.1
- Published
- Updated
- Exploit status
- No public exploit known
Description
@better-auth/expo before 1.7.16 allows certain account-takeover outcomes (e.g., unauthenticated changes of any account's email address), because it signs a caller-supplied state value without checking whether that value had been issued by the server. NOTE: the application secret must be rotated after updating to a fixed version.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| better-auth @better-auth/expo | < 1.7.16 | 1.7.16 |