Vulnerability · Published Nov 3, 2026 · Assigned by GitHub_M
CVE-2026-111752Angular: Denial of Service via Unmatched Empty-Path Outlet Route Matching in Server-Side Rendering (SSR)
High 8.2
In plain English
A high-severity uncontrolled resource consumption in angular from angular. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.33, 21.2.25, and 22.2.1, @angular/router in Node.js server-side rendering fails to require auxiliary outlet URL segments to match routes configured for their outlet names. Crafted requests containing multiple unconfigured empty-path outlet groups can repeatedly evaluate the route configuration, construct duplicate ActivatedRouteSnapshot trees, execute canMatch guards and resolvers, and copy route parameters and queryParams for each outlet. An unauthenticated remote attacker can exhaust the Node.js heap or CPU and terminate an SSR worker when SSR is enabled, a route level contains an empty-path route or named outlet, upstream infrastructure forwards the request target, and the worker has a constrained heap. The allocation is transient rather than a persistent leak, and client-side SPAs and build-time prerendering are not affected. This issue is fixed in versions 20.3.33, 21.2.25, and 22.2.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @angular/router | 22.2.1 | GHSA-62vg-58rm-qff7 |
| npm | @angular/router | 21.2.25 | GHSA-62vg-58rm-qff7 |
| npm | @angular/router | 20.3.33 | GHSA-62vg-58rm-qff7 |
| npm | @angular/router | no fix listed | GHSA-62vg-58rm-qff7 |
Affected products (as reported)
Weakness: CWE-400, CWE-405 · 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
References
- https://github.com/angular/angular/security/advisories/GHSA-62vg-58rm-qff7 x_refsource_CONFIRM
- https://github.com/angular/angular/issues/70932 x_refsource_MISC
- https://github.com/angular/angular/issues/70997 x_refsource_MISC
- https://github.com/angular/angular/pull/71055 x_refsource_MISC
- https://github.com/angular/angular/commit/a83f8119acd466b524ae0113096ed188358d6d6c x_refsource_MISC
- https://github.com/angular/angular/commit/b0d2ba0f54e21cb57ea5a0ca0d8e6065f28e23a0 x_refsource_MISC
- https://github.com/angular/angular/commit/e9bf52aa03a3b9b302c33ffbc967ef0e1de5fb79 x_refsource_MISC
- https://github.com/angular/angular/releases/tag/v20.3.33 x_refsource_MISC
- https://github.com/angular/angular/releases/tag/v21.2.25 x_refsource_MISC
- https://github.com/angular/angular/releases/tag/v22.2.1 x_refsource_MISC