CVE-2026-46419
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductYubico Webauthn-server-core
PublishedMay 14, 2026
First seenMay 14, 2026
Weakness typeCWE-253CWE-253
How to fix
Update
- Yubico webauthn-server-core2.8.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Yubico webauthn-server-core | 2.8.0 ≤ v < 2.8.2 | 2.8.2 |
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