CVE-2026-46419

HIGHNVD 7.57.5—

7.5

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.

CVSS v3: 7.5
EG Score: 7.5(high)
EPSS: 3.5%
KEV: Not listed

Published

May 14, 2026

Last Modified

May 14, 2026

Advisory Details (1)

Auto-updated May 14, 2026

No patch confirmed yet.

generic

YSA-2026-02 | Yubico

https://www.yubico.com/support/security-advisories/ysa-2026-02/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-253

Data Freshness Timeline

(refreshed 12× in last 7d / 17× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-21 22:43 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 12:21 UTCEG score recompute
2026-05-20 12:21 UTCGHSA enrichment
2026-05-20 11:22 UTCepss_batch

Frequently asked(5)

What is CVE-2026-46419?

CVE-2026-46419 is a high vulnerability published on May 14, 2026. 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.

When was CVE-2026-46419 disclosed?

CVE-2026-46419 was first published in the National Vulnerability Database on May 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-46419 actively exploited?

CVE-2026-46419 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-46419?

CVE-2026-46419 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2026-46419?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46419, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2026-46419

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

YSA-2026-02 | Yubico

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-46419?

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Last Modified

Advisory Details (1)

Frequently asked(5)

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