CVE-2026-121802
@better-auth/expo before 1.7.16 allows certain account-takeover outcomes (e.g., unauthenticated…
- Risk score
- 60/100
- CVSS
- 9.1 v3.1
- Published
- 4 Nov 2026
Open in the live forecast Today's forecast
What to know
- What it is
- @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 fix…
- Affected
- See advisory
- Fix
- Upgrade the product to 1.7.16 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 9.1 critical
- Remotely exploitable without logging in
References
Original 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.
Last activity 4 Nov 2026. Patch Forecast updates every hour.