Vulnerability 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.
Related Weaknesses (CWE)
References
- https://github.com/riganti/dotvvm/commit/1635245b5eaf9ccf8e3536b9d8b194181952658
- https://github.com/riganti/dotvvm/commit/4fc26a8591c76fb92ed701352c2a84120cf926c
- https://github.com/riganti/dotvvm/commit/5728ab80fff9af883b44d11c118d2e8a8991dcd
- https://github.com/riganti/dotvvm/releases/tag/v4.3.15
- https://github.com/riganti/dotvvm/releases/tag/v5.0.0-preview09
- https://github.com/riganti/dotvvm/security/advisories/GHSA-c2g3-c4gc-w5wg
FAQ
What is CVE-2026-57577?
CVE-2026-57577 is a documented vulnerability. 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 exc...
How severe is CVE-2026-57577?
CVSS scoring is not yet available for CVE-2026-57577. Check NVD for updates.
Is there a patch for CVE-2026-57577?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.