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CVE-2021-4236

CRITICAL CVSS: 9.8 Published: 2022-12-27 Modified: 2026-06-17

Description

Web Sockets do not execute any AuthenticateMethod methods which may be set, leading to a nil pointer dereference if the returned UserData pointer is assumed to be non-nil, or authentication bypass. This issue only affects WebSockets with an AuthenticateMethod hook. Request handlers that do not explicitly use WebSockets are not vulnerable.

Affected Platforms

Web Project Web

Weakness Type

CWE-476

References