CVE-2026-28787
HighSummary
OneUptime to rozwiązanie do monitorowania i zarządzania usługami online. W wersji 10.0.11 i wcześniejszych implementacja uwierzytelniania WebAuthn nie przechowuje wyzwania po stronie serwera, co narusza specyfikację WebAuthn i umożliwia atakującemu powtórzenie ważnego asercji WebAuthn.
Risk Assessment
Atakujący, który uzyskał ważną asercję WebAuthn, może w nieskończoność powtarzać uwierzytelnienie, całkowicie omijając uwierzytelnianie dwuskładnikowe, co stwarza poważne zagrożenie dla bezpieczeństwa organizacji.
Recommendation
Zaleca się aktualizację do najnowszej wersji OneUptime, gdyż obecnie nie ma znanych poprawek dla tej podatności.
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Original NVD description (English source)
OneUptime is a solution for monitoring and managing online services. In version 10.0.11 and prior, the WebAuthn authentication implementation does not store the challenge on the server side. Instead, the challenge is returned to the client and accepted back from the client request body during verification. This violates the WebAuthn specification (W3C Web Authentication Level 2, §13.4.3) and allows an attacker who has obtained a valid WebAuthn assertion (e.g., via XSS, MitM, or log exposure) to replay it indefinitely, completely bypassing the second-factor authentication. No known patches are available.

