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.
Published: 2026-11-04
Score: 9.1 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 04 Nov 2026 03:00:00 +0000

Type Values Removed Values Added
First Time appeared Better-auth
Better-auth better Auth
CPEs cpe:2.3:a:better-auth:better_auth:*:*:*:*:*:*:*:*
Vendors & Products Better-auth
Better-auth better Auth

Wed, 04 Nov 2026 02:45:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-346
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}


Subscriptions

Better-auth Better Auth
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-11-04T02:44:07.935Z

Reserved: 2026-11-04T02:36:12.694Z

Link: CVE-2026-121802

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-11-04T03:17:15.730

Modified: 2026-11-04T03:17:15.877

Link: CVE-2026-121802

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses