Allocation of Resources Without Limits or Throttling Affecting @angular/router package, versions >=22.0.0 <22.2.1>=21.2.0 <21.2.25
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- published20 Oct 2026
- disclosed20 Oct 2026
- creditJaime Burgos
Introduced: 20 Oct 2026
NewCVE-2026-111751 (opens in a new tab)How to fix?
Upgrade @angular/router to version 22.2.1, 21.2.25 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the RouterLink directive's _urlTree computed signal, which permanently caches a UrlTree instance (including its cloned query parameter map and segment tree) in ReactiveNode.value for the lifetime of every <a routerLink> element in a view. During server-side rendering (SSR), each rendered link pins a full copy of the query parameter map in the heap. In an application with many links and large query parameter sets, this causes server workers to crash with an Out of Memory (OOM) error under concurrent load.
Note: This is only exploitable when the application is rendered server-side (SSR) and has a significant number of routerLink elements combined with large query parameter payloads or defaultQueryParamsHandling: 'merge' enabled.