Vulnerability in better-auth Better Auth

[ Why it matters ]Priority signals

• Critical severity: CVSS 9.1

[ Description ]Official 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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/better-auth/better-auth/blob/main/packages/expo/CHANGELOG.md
• github.com/better-auth/better-auth/releases/tag/v1.7.16
• github.com/better-auth/better-auth/security/advisories/GHSA-4wq4-2ppv-q3hg