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    1 vulnerability by hermes-webui

    CVE-2026-55196 (GCVE-0-2026-55196)

    Vulnerability from cvelistv5 – Published: 2026-06-17 17:58 – Updated: 2026-06-23 16:16 X_Open Source
    VLAI
    Title
    Hermes WebUI < 0.51.409 - Unauthenticated Passkey Registration via Authentication Bypass
    Summary
    Hermes WebUI before 0.51.409 contains an authentication bypass vulnerability in passkey registration endpoints that allows unauthenticated remote attackers to register arbitrary passkeys. When HERMES_WEBUI_PASSKEY=1 is enabled with no existing credentials, POST /api/auth/passkey/register/options and POST /api/auth/passkey/register endpoints are accessible without authentication, allowing attackers to claim the first passkey and gain permanent administrative control.
    Severity
    9.1 (Critical)
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
    9.1 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-306 - Missing Authentication for Critical Function
    Assigner
    References
    Impacted products
    Vendor Product Version
    hermes-webui hermes-webui Affected: 0 , < 0.51.409 (semver)
    Unaffected: 0.51.409 (semver)
    		Create a notification for this product.
    Date Public
    2026-06-14 00:00
    Credits
    Chia Min Jun Lennon
    Show details on NVD website
    To clipboard 

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