Improper Encoding or Escaping of Output Affecting @angular/platform-server package, versions <20.3.30>=21.0.0 <21.2.22>=22.0.0 <22.1.4


Severity

Recommended
0.0
high
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
0.28% (19th percentile)

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  • Snyk IDSNYK-JS-ANGULARPLATFORMSERVER-20254744
  • published29 Sept 2026
  • disclosed28 Sept 2026
  • creditVenkatesan

Introduced: 28 Sep 2026

NewCVE-2026-88058  (opens in a new tab)
CWE-116  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade @angular/platform-server to version 20.3.30, 21.2.22, 22.1.4 or higher.

Overview

@angular/platform-server is an Angular - library for using Angular in Node.js

Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output via the bundled domino dependency, which is used for server-side DOM emulation during Angular Universal rendering. An attacker can supply malicious input that is processed by the vulnerable version of domino, allowing arbitrary JavaScript to execute in a victim's browser when the server-rendered HTML is delivered.

CVSS Base Scores

version 4.0
version 3.1