SignalR Unauthenticated ReDoS Vulnerability Analysis

Vulnerability Summary: SignalR Unauthorized Regular Expression Denial of Service (ReDoS) Vulnerability Overview The SignalR server has an unauthorized regular expression denial of service (ReDoS) vulnerability when processing WebSocket subscription paths. An attacker can inject unescaped regex metacharacters (such as , , , etc.) into the parameter to construct patterns containing nested quantifiers (e.g., `{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a{a

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SignalR Unauthenticated ReDoS Vulnerability Analysis

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