PT-2026-40845 · Yubico · Webauthn-Server-Core

Published 2026-05-14 · Updated 2026-05-14 · CVE-2026-46419

Mitre

CVSS v3.1

7.5

High

Base vector

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

Yubico webauthn-server-core (aka java-webauthn-server) 2.8.0 before 2.8.2 incorrectly checks a function's return value in the second factor flow, leading to impersonation.

Fix

Weakness Enumeration

CWE-253

Related Identifiers

CVE-2026-46419

Affected Products

Webauthn-Server-Core

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-46419 · Security Note
• https://yubico.com/support/security-advisories/ysa-2026-02 · Note