HIGH 7.1
GHSA-vp58-j275-797x
Better Auth allows bypassing the trustedOrigins Protection which leads to ATO
Quick fix
GHSA-vp58-j275-797x — better-auth: upgrade to the fixed version with the command below.
npm install better-auth@1.1.21Details
### Summary
A bypass was discovered in the trustedOrigins validation logic—affecting both absolute URL entries and wildcard domain patterns. This flaw allows an attacker to construct a malicious callbackURL that passes origin checks and triggers an open redirect.
Because redirect endpoints include sensitive tokens (such as password-reset tokens), this vulnerability can enable one-click account takeover if a victim clicks a crafted link.
Are you affected?
Enter the version of the package you're using.
Affected packages
References
- https://github.com/better-auth/better-auth/security/advisories/GHSA-vp58-j275-797x [WEB]
- https://github.com/better-auth/better-auth/commit/b381cac7aafd6aa53ef78b6ab771ebfa24643c80 [WEB]
- https://github.com/better-auth/better-auth [PACKAGE]
- https://github.com/better-auth/better-auth/blob/ddebd0358d74376ea64541512d0167dd4377f182/packages/better-auth/src/api/middlewares/origin-check.ts#L53 [WEB]