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TI-2026-34132 Aliases CVE-2026-46419GHSA-wq52-w6cx-5mg2

Yubico webauthn-server-core (aka java-webauthn-server) 2.8.0 before 2.8.2 incorrectly…

Priority LOW 35CWE-253Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00308 23rd percentileScored 2026-11-07
Fix Fixed webauthn-server-core (Yubico): 2.8.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Yubicowebauthn-server-core2.8.0 to before 2.8.22.8.2Patch availableCNA
  • webauthn-server-core VendorYubico Affected 2.8.0 to before 2.8.2 Fixed in 2.8.2 Patch available CNA

Remediation

  • Fix · CNA webauthn-server-core (Yubico) Fixed in 2.8.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-46419
  2. 2026-10-03 Alias added: GHSA-wq52-w6cx-5mg2

References

Other 2

  • TI-2023-20808 The PKCS11 module of the YubiHSM 2 SDK through 2023.01 does not properly validate the… CVSS 3.1HIGH 7.5
  • TI-2011-03638 Improper input validation in yubico-pam CVSS 3.1CRITICAL 9.8
  • TI-2020-08207 The sync endpoint in YubiKey Validation Server before 2.40 allows remote attackers to… CVSS 3.1HIGH 8.6
  • TI-2019-09116 In Yubico pam-u2f 1.0.7, when configured with debug and a custom debug log file is set… CVSS 3.0HIGH 8.1
  • TI-2018-06723 In check_user_token in util.c in the Yubico PAM module (aka pam_yubico) 2.18 through… CVSS 3.0HIGH 8.2
  • TI-2015-02918 Yubico ykneo-openpgp before 1.0.10 has a typo in which an invalid PIN can be used. CVSS 3.1HIGH 8.8
See all 29 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences