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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-61928 Detail

Description

Better Auth is an authentication and authorization library for TypeScript. In versions prior to 1.3.26, unauthenticated attackers can create or modify API keys for any user by passing that user's id in the request body to the `api/auth/api-key/create` route. `session?.user ?? (authRequired ? null : { id: ctx.body.userId })`. When no session exists but `userId` is present in the request body, `authRequired` becomes false and the user object is set to the attacker-controlled ID. Server-only field validation only executes when `authRequired` is true (lines 280-295), allowing attackers to set privileged fields. No additional authentication occurs before the database operation, so the malicious payload is accepted. The same pattern exists in the update endpoint. This is a critical authentication bypass enabling full an unauthenticated attacker can generate an API key for any user and immediately gain complete authenticated access. This allows the attacker to perform any action as the victim user using the api key, potentially compromise the user data and the application depending on the victim's privileges. Version 1.3.26 contains a patch for the issue.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  GitHub, Inc.
CVSS-B 9.3 CRITICAL
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/better-auth/better-auth/commit/556085067609c508f8c546ceef9003ee8c607d39 GitHub, Inc.
https://github.com/better-auth/better-auth/security/advisories/GHSA-99h5-pjcv-gr6v CISA-ADP, GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-285 Improper Authorization GitHub, Inc.  
CWE-306 Missing Authentication for Critical Function GitHub, Inc.  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-61928
NVD Published Date:
10/09/2025
NVD Last Modified:
10/14/2025
Source:
GitHub, Inc.