CVE-2026-121802
Deferred Deferred - Pending Action

Authentication Bypass in Better Auth Expo SDK

Publication date: 2026-11-04

Last updated on: 2026-11-04

Assigner: MITRE

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.

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Meta Information

Published
2026-11-04
Last Modified
2026-11-04
Generated
2026-11-04
EPSS Evaluated
N/A
NVD
CVE-2026-121802
EUVD
EUVD-2026-116694

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
better-auth Better Auth 0

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-346 The product does not properly verify that the source of data or communication is valid.

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