Is CVE-2026-41427 actively exploited?

No active exploitation of CVE-2026-41427 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-41427 be exploited remotely?

Yes. CVE-2026-41427 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-41427?

CVE-2026-41427 has a CVSS score of 7.1 (HIGH).

HOME VULNERABILITIESCVE-2026-41427

HIGH

CVE-2026-41427

CWE-863Published: April 24, 2026· Updated: Apr 27, 2026

7.1

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:15.1th

Official Description

Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.5, the clientPrivileges option documents a create action, but the OAuth client creation endpoints did not invoke the hook before persisting new clients. Deployments that configured clientPrivileges to restrict client registration were not actually restricted — any authenticated user could reach the create endpoints and register an OAuth client with attacker-chosen redirect URIs and metadata. This vulnerability is fixed in 1.6.5.

NVD Source

Technical Analysis

CVE-2026-41427 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.Low

User InteractionNone

ScopeX

Impact

Confidentiality

Integrity

Availability

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X