{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "4.3.0"
              },
              {
                "fixed": "4.3.15"
              },
              {
                "introduced": "5.0.0-preview01"
              },
              {
                "fixed": "5.0.0-preview09-final"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "b6cc7e864bd3f870a6cc9df612edc1531a68c929"
            },
            {
              "introduced": "0e0c11a5a985d65f6309fb8c6f5d473adf997342"
            },
            {
              "fixed": "9f770c7621e641f5d000b7a777295bf68a77dd13"
            },
            {
              "fixed": "6324d80d588f1578aeefa5bcc2ef6e753c826968"
            },
            {
              "fixed": "1635245b5eaf9ccf8e3536b9d8b1941819526585"
            },
            {
              "fixed": "4fc26a8591c76fb92ed701352c2a84120cf926c5"
            },
            {
              "fixed": "5728ab80fff9af883b44d11c118d2e8a8991dcd4"
            }
          ],
          "repo": "https://github.com/riganti/dotvvm",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-c2g3-c4gc-w5wg"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-1333"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57577.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "4.2.11"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "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.",
  "id": "CVE-2026-57577",
  "modified": "2026-09-16T03:30:56.753946117Z",
  "published": "2026-09-14T17:37:54.739Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/riganti/dotvvm/releases/tag/v4.3.15"
    },
    {
      "type": "WEB",
      "url": "https://github.com/riganti/dotvvm/releases/tag/v5.0.0-preview09"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57577.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/riganti/dotvvm/security/advisories/GHSA-c2g3-c4gc-w5wg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57577"
    },
    {
      "type": "FIX",
      "url": "https://github.com/riganti/dotvvm/commit/1635245b5eaf9ccf8e3536b9d8b1941819526585"
    },
    {
      "type": "FIX",
      "url": "https://github.com/riganti/dotvvm/commit/4fc26a8591c76fb92ed701352c2a84120cf926c5"
    },
    {
      "type": "FIX",
      "url": "https://github.com/riganti/dotvvm/commit/5728ab80fff9af883b44d11c118d2e8a8991dcd4"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "DotVVM: ReDOS in routing"
}