CVE-2026-121802

Published: Nov 4, 2026Modified: Nov 4, 2026Deferred

9.1

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitability: 3.9 / Impact: 5.2

Source: MITRE (Secondary)

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.

Related CWEs

CWE-346

Origin Validation Error

The product does not properly verify that the source of data or communication is valid.

References (3)

https://github.com/better-auth/better-auth/blob/main/packages/expo/CHANGELOG.md

Source: cve@mitre.org

https://github.com/better-auth/better-auth/releases/tag/v1.7.16

Source: cve@mitre.org

https://github.com/better-auth/better-auth/security/advisories/GHSA-4wq4-2ppv-q3hg

Source: cve@mitre.org

Timeline

No history available yet.