VYPR

CWE-603

Use of Client-Side Authentication

BaseDraft

Description

A client/server product performs authentication within client code but not in server code, allowing server-side authentication to be bypassed via a modified client that omits the authentication check.

Client-side authentication is extremely weak and may be breached easily. Any attacker may read the source code and reverse-engineer the authentication mechanism to access parts of the application which would otherwise be protected.

Hierarchy (View 1000)

Children

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CVEs mapped to this weakness (26)

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  • CVE-2024-52327MedJan 23, 2025
    risk 0.42cvss 6.5epss 0.00

    The cloud service used by ECOVACS robot lawnmowers and vacuums allows authenticated attackers to bypass the PIN entry required to access the live video feed.

  • CVE-2020-27266MedJan 19, 2021
    risk 0.42cvss 6.5epss 0.01

    In SOOIL Developments Co., Ltd Diabecare RS, AnyDana-i and AnyDana-A, a client-side control vulnerability in the insulin pump and its AnyDana-i and AnyDana-A mobile applications allows physically proximate attackers to bypass user authentication checks via Bluetooth Low Energy.

  • CVE-2025-62649MedOct 17, 2025
    risk 0.38cvss 5.8epss 0.01

    The Restaurant Brands International (RBI) assistant platform through 2025-09-06 relies on client-side authentication for submission of equipment orders.

  • CVE-2026-3096MedSep 10, 2026
    risk 0.24cvss 4.7epss 0.00

    The product's web portals allow external links to be opened in a new browser tab. In certain configurations, the originating window retains access to the newly opened page, allowing interaction between the two browser contexts when navigating to external destinations. This…

  • CVE-2026-8830MedMay 19, 2026
    risk 0.21cvss 4.3epss 0.00

    A flaw was found in Keycloak. An authenticated user can bypass configured WebAuthn policies during credential registration by manipulating client-side JavaScript. This occurs because the server-side processAction() fails to validate that the newly created credential's…

  • CVE-2022-3218CriSep 19, 2022
    risk 0.09cvss 9.8epss 0.74

    Due to a reliance on client-side authentication, the WiFi Mouse (Mouse Server) from Necta LLC's authentication mechanism is trivially bypassed, which can result in remote code execution.