---
id: CVE-2026-88056
title: >-
  Angular is a development platform for building mobile and desktop web
  applications using TypeScript/JavaScript and other languages
summary: >-
  Angular is a development platform for building mobile and desktop web
  applications using TypeScript/JavaScript and other languages. Prior to
  20.3.30, 21.2.22, and 22.1.4, Angular Server-Side Rendering in
  @angular/platform-server processe…
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-918
vendor: angular
product: angular
affected:
  - 'angular >= 19.0.0, <= 19.2.25'
  - 'angular >= 20.0.0, < 20.3.30'
  - 'angular >= 21.0.0, < 21.2.22'
  - 'angular >= 22.0.0, < 22.1.4'
patched:
  - angular 22.1.4
published: '2026-09-10'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T19:02:56.377'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88056'
references:
  - url: >-
      https://github.com/angular/angular/commit/3e924cc8dbbb57f23b262cb8f0d7e2bd0673034c
    label: security-advisories@github.com
  - url: >-
      https://github.com/angular/angular/commit/5aa6d97deb9ef1de14e23748b7fa74f97d183132
    label: security-advisories@github.com
  - url: >-
      https://github.com/angular/angular/commit/71e52d1396b9cef98652929b73e08c4cde645970
    label: security-advisories@github.com
  - url: 'https://github.com/angular/angular/releases/tag/v20.3.30'
    label: security-advisories@github.com
  - url: 'https://github.com/angular/angular/releases/tag/v21.2.22'
    label: security-advisories@github.com
  - url: 'https://github.com/angular/angular/releases/tag/v22.1.4'
    label: security-advisories@github.com
  - url: 'https://github.com/angular/angular/security/advisories/GHSA-f6mr-pjwc-34m4'
    label: security-advisories@github.com
  - url: 'https://github.com/angular/angular/security/advisories/GHSA-f6mr-pjwc-34m4'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00541
epssPercentile: 0.45317
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-15T14:56:19.499267Z'
scores:
  nvd: 9.1
  cna: 8.6
ingestedAt: '2026-09-13T19:06:54.816Z'
---

## Overview

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.30, 21.2.22, and 22.1.4, Angular Server-Side Rendering in @angular/platform-server processes user-controlled resource or request URLs through HttpClient after application code validates them with WHATWG URL parsing. The resolveUrl and parseUrl utilities called String.prototype.trim(), which removed leading Unicode whitespace such as U+00A0 or U+FEFF after the input passed a same-origin check, converting a relative path into a protocol-relative attacker-controlled URL. In affected applications that attach sensitive server-side credentials such as Authorization headers to approved requests, relativeUrlsTransformerInterceptorFn then dispatched the request to the attacker-controlled origin, causing SSRF and credential disclosure. This issue is fixed in versions 20.3.30, 21.2.22, and 22.1.4.

## Affected

- `angular >= 19.0.0, <= 19.2.25`
- `angular >= 20.0.0, < 20.3.30`
- `angular >= 21.0.0, < 21.2.22`
- `angular >= 22.0.0, < 22.1.4`

## Remediation

Upgrade past the affected range:

- `angular 22.1.4`