Vulnerability · Published Nov 3, 2026 · Assigned by GitHub_M
CVE-2026-111751Angular: Denial of Service via RouterLink Query Parameter Retention 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 0.7% (higher than 52% 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. From 21.2.0 until 21.2.25 and 22.2.1, RouterLink directives rendered during Node.js server-side rendering retain computed UrlTree instances for the lifetime of each request. When queryParamsHandling is set to merge or preserve, either per link or through defaultQueryParamsHandling, every rendered link can retain a copy of attacker-controlled query parameters in its UrlTree. When upstream proxies or load balancers forward oversized query strings without rejecting them at the edge, multiple affected links and overlapping renders can amplify heap use until the Node.js old-space heap is exhausted and the SSR worker terminates. Numeric query-parameter names increase allocation pressure but are not required, memory is released after rendering completes, and pure client-side SPAs are not affected. This issue is fixed in versions 21.2.25 and 22.2.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @angular/router | 22.2.1 | GHSA-57xq-rjx2-v5xh |
| npm | @angular/router | 21.2.25 | GHSA-57xq-rjx2-v5xh |
Affected products (as reported)
Weakness: CWE-400, CWE-770 · 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-57xq-rjx2-v5xh x_refsource_CONFIRM
- https://github.com/angular/angular/issues/70908 x_refsource_MISC
- https://github.com/angular/angular/pull/70953 x_refsource_MISC
- https://github.com/angular/angular/commit/14793bfe4b44a36ed4b7e49a60458ec711c2b41a x_refsource_MISC
- https://github.com/angular/angular/commit/a131f77d92808ad5c2f3fa4dc6fde36825f12c5a 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