Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-46419

Quick assessment

Affected
Yubico webauthn-server-core
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

java-webauthn-server是Yubico开源的一款Java服务端Web认证库。 java-webauthn-server 2.8.0版本至2.8.2之前版本存在安全漏洞，该漏洞源于在第二因素流程中错误检查函数返回值，可能导致身份冒充。

CVSS 7.5 · High EPSS 0.42% · P34

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
Yubico webauthn-server-core 2.8.0< 2.8.2 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-46419

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对函数返回值的检查不正确
Source: CVE Program / CVE List V5
Vulnerability Title
java-webauthn-server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
java-webauthn-server是Yubico开源的一款Java服务端Web认证库。 java-webauthn-server 2.8.0版本至2.8.2之前版本存在安全漏洞，该漏洞源于在第二因素流程中错误检查函数返回值，可能导致身份冒充。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Yubico webauthn-server-core 2.8.0 ~ 2.8.2 -

II. Public POCs for CVE-2026-46419

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8434 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-46419

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-46419 (1)

Vendor Advisories for CVE-2026-46419 (1)

IV. Related Vulnerabilities

Same vendor: Yubico
Same weakness: CWE-253

V. Comments for CVE-2026-46419

No comments yet

Leave a comment