Weakness (CWE)
CWE-603: Use of Client-Side Authentication
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.
How to prevent it (1 mitigation)
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Architecture and Design
Do not rely on client side data. Always perform server side authentication.
Source: MITRE CWE-603
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Medium 4.7
Reverse Tabnabbing via New Tab Navigation in Multiple WSO2 Products Allows Phishing and Credential Theft
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 dest…
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Medium 4.3
Keycloak: org.keycloak/keycloak-services: keycloak: policy bypass during webauthn credential registration via client-side javascript manipulation
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 cre…
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Medium 5.8
The Restaurant Brands International (RBI) assistant platform through 2025-09-06 relies on client-side authentication fo…
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Medium 6.5
ECOVACS lawnmower and vacuum cloud service live video PIN bypass
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.