CyberRota Analysis
AI-GeneratedThe DotVVM framework is vulnerable to excessive regular-expression backtracking due to multiple unconstrained parameters in route path segments, which can be exploited by remote attackers to cause denial of service through long near-match paths. This vulnerability affects versions prior to 4.2.11, 4.3.15, and 5.0.0-preview09-final, and organizations using these versions should prioritize updating to the patched releases to mitigate potential service disruptions.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
DotVVM is an open source MVVM framework for web applications. Prior to 4.2.11, 4.3.15, and 5.0.0-preview09-final, a route containing multiple unconstrained parameters in one path segment can cause excessive regular-expression backtracking in DotvvmRoute.IsMatch when a remote requester supplies a long near-match path. DotvvmRouteParser.RouteRegex previously had no matching timeout. Patched runtimes retry with the .NET non-backtracking engine, while runtimes that do not support non-backtracking matching return HTTP 503 after the one-second timeout in DotvvmRoutingMiddleware. This issue is fixed in versions 4.2.11, 4.3.15, and 5.0.0-preview09-final.