High 8.2Published Sep 14, 2026

CVE-2026-57577DotVVM: ReDOS in routing

Updated under an hour ago (2026-10-19 06:30 UTC)

Does this affect you?

It affects riganti dotvvm. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for riganti dotvvm

Exploited in the last 30 days

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.

CVSS: 8.2 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-1333
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Sep 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

riganti dotvvm riganti:dotvvm (from the name)	before 4.2.11; from 4.3.0, < 4.3.15; from 5.0.0-preview01, < 5.0.0-preview09-final	CNA record

References

https://github.com/riganti/dotvvm/security/advisories/GHSA-c2g3-c4gc-w5wgx-refsource-confirm
https://github.com/riganti/dotvvm/commit/1635245b5eaf9ccf8e3536b9d8b1941819526585x-refsource-misc
https://github.com/riganti/dotvvm/commit/4fc26a8591c76fb92ed701352c2a84120cf926c5x-refsource-misc
https://github.com/riganti/dotvvm/commit/5728ab80fff9af883b44d11c118d2e8a8991dcd4x-refsource-misc
https://github.com/riganti/dotvvm/releases/tag/v4.3.15x-refsource-misc
https://github.com/riganti/dotvvm/releases/tag/v5.0.0-preview09x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.