{"id":"CVE-2026-57577","state":"PUBLISHED","title":"DotVVM: ReDOS in routing","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.","publishedAt":"2026-09-14T17:37:54.739Z","updatedAt":"2026-09-14T17:54:30.539Z","severity":{"score":8.2,"label":"High","version":"4.0","vector":"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","source":"GitHub_M"},"assigner":"GitHub_M","products":["riganti dotvvm"],"affected":[{"vendor":"riganti","product":"dotvvm","versions":[{"version":"< 4.2.11","status":"affected"},{"version":">= 4.3.0, < 4.3.15","status":"affected"},{"version":">= 5.0.0-preview01, < 5.0.0-preview09-final","status":"affected"}]}],"references":["https://github.com/riganti/dotvvm/security/advisories/GHSA-c2g3-c4gc-w5wg","https://github.com/riganti/dotvvm/commit/1635245b5eaf9ccf8e3536b9d8b1941819526585","https://github.com/riganti/dotvvm/commit/4fc26a8591c76fb92ed701352c2a84120cf926c5","https://github.com/riganti/dotvvm/commit/5728ab80fff9af883b44d11c118d2e8a8991dcd4","https://github.com/riganti/dotvvm/releases/tag/v4.3.15","https://github.com/riganti/dotvvm/releases/tag/v5.0.0-preview09"],"weaknesses":["CWE-1333"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/57xxx/CVE-2026-57577.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-57577","state":"PUBLISHED","datePublished":"2026-09-14T17:37:54.739Z","dateUpdated":"2026-09-14T17:54:30.539Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-24T18:49:56.208Z"},"containers":{"cna":{"title":"DotVVM: ReDOS in routing","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"riganti","product":"dotvvm","versions":[{"version":"< 4.2.11","status":"affected"},{"version":">= 4.3.0, < 4.3.15","status":"affected"},{"version":">= 5.0.0-preview01, < 5.0.0-preview09-final","status":"affected"}]}],"references":[{"url":"https://github.com/riganti/dotvvm/security/advisories/GHSA-c2g3-c4gc-w5wg","name":"https://github.com/riganti/dotvvm/security/advisories/GHSA-c2g3-c4gc-w5wg","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/riganti/dotvvm/commit/1635245b5eaf9ccf8e3536b9d8b1941819526585","name":"https://github.com/riganti/dotvvm/commit/1635245b5eaf9ccf8e3536b9d8b1941819526585","tags":["x_refsource_MISC"]},{"url":"https://github.com/riganti/dotvvm/commit/4fc26a8591c76fb92ed701352c2a84120cf926c5","name":"https://github.com/riganti/dotvvm/commit/4fc26a8591c76fb92ed701352c2a84120cf926c5","tags":["x_refsource_MISC"]},{"url":"https://github.com/riganti/dotvvm/commit/5728ab80fff9af883b44d11c118d2e8a8991dcd4","name":"https://github.com/riganti/dotvvm/commit/5728ab80fff9af883b44d11c118d2e8a8991dcd4","tags":["x_refsource_MISC"]},{"url":"https://github.com/riganti/dotvvm/releases/tag/v4.3.15","name":"https://github.com/riganti/dotvvm/releases/tag/v4.3.15","tags":["x_refsource_MISC"]},{"url":"https://github.com/riganti/dotvvm/releases/tag/v5.0.0-preview09","name":"https://github.com/riganti/dotvvm/releases/tag/v5.0.0-preview09","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","vectorString":"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1333","lang":"en","description":"CWE-1333: Inefficient Regular Expression Complexity","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-14T17:37:54.739Z"},"source":{"advisory":"GHSA-c2g3-c4gc-w5wg","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-14T17:54:17.670075Z","id":"CVE-2026-57577","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-14T17:54:30.539Z"}}]}}}