fix(deps): update dependency @angular/core to v20.3.25 [security] by renovate[bot] · Pull Request #1307 · cds-snc/gcds-components

renovate · 2026-06-15T18:58:54Z

ℹ️ Note

This PR body was truncated due to platform limits.

This PR contains the following updates:

Package	Change	Age	Confidence
@angular/core (source)	`^19.2.18` → `^20.0.0`
@angular/core (source)	`20.3.24` → `20.3.25`

Review

Updates have been tested and work
If updates are AWS related, versions match the infrastructure (e.g. Lambda runtime, database, etc.)

Angular Client Hydration DOM Clobbering & Response-Cache Poisoning

CVE-2026-54267 / GHSA-rgjc-h3x7-9mwg

More information

Details

To optimize client-side bootstrap in Server-Side Rendered (SSR) environments, Angular supports Hydration via provideClientHydration(). During SSR, Angular serializes the application's runtime state (such as cached HttpClient responses) and outputs it into the HTML stream as a <script> tag with a predictable identifier:

<script type="application/json" id="ng-state">
    {"some-api-url": {"body": ...}}
</script>

During client bootstrap, Angular recovers this state by looking up the element via document.getElementById('ng-state') and parsing its text content.

Because the DOM element lookup for the state container is predictable and relies solely on the ID selector (ng-state), it is susceptible to DOM Clobbering.

If the application binds untrusted user input or CMS content to element properties such as id (e.g., <div [id]="userInput"> or <a id="ng-state">) before the genuine <script> tag is parsed by the browser, the attacker-controlled element takes precedence in the DOM lookup.

During hydration, when Angular calls document.getElementById('ng-state'), the browser returns the attacker's clobbered element. Angular then attempts to parse the text content or attributes of this clobbered element as JSON.

Impact

By clobbering the state element, the attacker can inject a custom JSON payload into Angular's TransferState cache. The most critical exploitation vector is poisoning the HTTP Transfer Cache.

The attacker injects a clobbered ng-state element containing custom JSON.
The JSON maps a key (representing a target API endpoint URL) to a malicious payload of the attacker's choice.
During client-side initialization, Angular's HttpClient checks TransferState before making requests. Finding the poisoned key, HttpClient returns the forged response instantly instead of requesting the genuine backend API.

Depending on how the application processes and renders the affected API response, this can lead to:

DOM-based Cross-Site Scripting (XSS) if poisoned fields are rendered using unsafe bindings.
Privilege Escalation by spoofing user info or session details retrieved from poisoned API payloads.
UI Hijacking and redirection by spoofing configuration endpoints.

Patched Versions

22.0.1
21.2.17
20.3.25

Workarounds

If you cannot immediately update to a patched Angular version, apply the following workarounds:

A. Avoid Dynamic/User-Controlled IDs

Avoid binding raw user-supplied values or dynamic CMS IDs directly to element attributes. If dynamic IDs are required, sanitize them or prepend a static safe prefix:

<!-- Vulnerable Pattern -->
<div [id]="userControlledInput">...</div>

<!-- Mitigated Pattern -->
<div [id]="'safe-prefix-' + userControlledInput">...</div>

B. Configure a Custom Application ID

Declaring a unique, non-predictable APP_ID changes the ID suffix of the state element, making it harder for attackers to predict and target:

// app.config.ts

import { APP_ID } from '@&#8203;angular/core';
import { provideClientHydration } from '@&#8203;angular/platform-browser';

export const appConfig = {
  providers: [
    { provide: APP_ID, useValue: 'unique-obfuscated-app-id' },
    provideClientHydration()
  ]
};

This changes the state element lookup ID from ng-state to unique-obfuscated-app-id-state.

Severity

CVSS Score: 8.6 / 10 (High)
Vector String: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

References

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

Release Notes

angular/angular (@angular/core)

Commit	Type	Description
9f443bc24c	fix	Limits date format string length
566ad05f20	fix	skip transfer cache for uncacheable HTTP traffic
1a62130a6b	fix	use cryptographically secure SHA-256 for transfer cache key generation

Commit	Type	Description
768a349e6e	fix	harden TransferState restoration against DOM clobbering
ca48b4728d	fix	validate lowercase SVG animation attribute names (#69270)

Commit	Type	Description
06be298267	fix	preserve empty referrer option in HttpRequest
fa940e1f4d	fix	Rejects non-HTTP(S) URLs in JSONP requests
e2ef1ce72a	fix	skip transfer cache for fetch credentialed requests

Commit	Type	Description
49368c1859	fix	harden platform location origin validation during SSR
d55c94ad81	refactor	deprecate ServerXhr (#69256)

Commit	Type	Description
6ca433e56b	fix	throw on suspicious URLs and restrict protocol-relative URLs
8680b5152f	fix	update domino to latest version

Commit	Type	Description
3d135ce59b	fix	add upper bounds for digitsInfo
39a4b4cc8e	fix	sanitize placeholder

Commit	Type	Description
8f35b182b1	fix	normalize tag names with custom namespaces in DomElementSchemaRegistry (#68926)
64a89e917a	fix	sanitize dynamic href and xlink:href bindings on SVG a elements (#68926)
6404edfe0a	fix	strip namespaced SVG script elements during template compilation (#68926)

Commit	Type	Description
e345a58069	fix	normalize tag names in runtime i18n attribute security context lookup (#68926)
d86e4e7b2a	fix	reject script element as a dynamic component host (#68926)
af04936045	fix	sanitize meta selectors
dc631efa96	fix	support prefix-insensitive DOM schema lookups and compile-time i18n attribute validation (#68926)
909ef047b3	fix	synchronize core sanitization schema with compiler (#68926)

Commit	Type	Description
de7b2a62e7	fix	exclude withCredentials requests from transfer cache
4233188d8e	fix	skip TransferCache for cookie-bearing requests by default

Commit	Type	Description
5fdfd8a998	fix	preserve redirect policy on reconstructed asset requests
83b022f2d0	fix	Preserves explicit 'credentials: omit' in asset requests
e617fa06eb	fix	Preserves HTTP cache mode in asset group requests

Commit	Type	Description
f9d0818087	fix	support arbitrary nesting in :host-context()
106b9040df	fix	support commas in :host() argument
9419ea348a	fix	support complex selectors in :nth-child()
036c5d2a07	fix	support one additional level of nesting in :host()

Commit	Type	Description
4c89a267c3	fix	pass element removal property through in all locations (#64565)
2fad4d4ab6	fix	prevent duplicate nodes from being retained with fast `animate.leave`` calls (#64592)

Commit	Type	Description
cfd8ed3fff	fix	Fix outlet serialization and parsing with no primary children (#64505)
182fe78f91	fix	Surface parse errors in Router.parseUrl (#64503)

Commit	Type	Description
8dec92ff9f	fix	capture metadata for undecorated fields (#63957) (#64317)
c2e817b0ef	perf	fix performance of "interpolated signal not invoked" check (#64410)

Commit	Type	Description
a9bcffdbc7	fix	disallow event attribute bindings in host bindings unconditionally (#68468)
97eeb45cfa	fix	validate security-sensitive attributes in i18n bindings (#68468)

Commit	Type	Description
72126f9a08	fix	sanitize translated attribute bindings with interpolations
626bc8bc20	fix	sanitize translated form attributes

Commit	Type	Description
f15cfa4cc4	fix	fixes regression in `animate.leave` function bindings (#64413)
d54dd674ca	fix	Prevents early style pruning with leave animations (#64335)

Commit	Type	Description
554573e524	fix	migrating input with more than 1 usage in a method (#64367)
2c79ca0b57	fix	remove error for no matching files in control flow migration (#64253) (#64314)

Commit	Type	Description
853ed169a8	fix	ensure missing leave animations don't queue leave animations (#64226)
6fed986b7a	fix	Fixes animations in conjunction with content projection (#63776)
76fe5599fe	fix	handle undefined CSS time values in parseCssTimeUnitsToMs function (#64181)
3b959105be	fix	prevent early exit from leave animations when multiple transitions are present (#64225)

Commit	Type	Description
542cd0019a	fix	do not rename ARIA property bindings to attributes (#64089)
0e928fbc4a	fix	Fixes animations in conjunction with content projection (#63776)
e5157bd933	fix	prevents unintended early termination of leave animations and hoisting (#64088)

Commit	Type	Description
1710cbd7d4	fix	handle shorthand property declarations in NgModule (#64160)
77b6305a4b	fix	skip migration for inputs with 'this' references (#64142)

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Review

Angular Client Hydration DOM Clobbering & Response-Cache Poisoning

Details

Impact

Patched Versions

Workarounds

A. Avoid Dynamic/User-Controlled IDs

B. Configure a Custom Application ID

Severity

References

Release Notes

Deprecations

platform-server

common

compiler

core

http

platform-server

service-worker

platform-server

compiler

common

compiler

core

http

platform-server

service-worker

platform-server

core

platform-server

platform-server

compiler

core

Breaking Changes

core

core

core

compiler

http

common

compiler

core

compiler-cli

migrations

animations

compiler

compiler-cli

core

router

core

platform-browser

compiler-cli

core

migrations

router

core

migrations

compiler

core

migrations

Deprecations

platform-server

common

compiler

core

http

platform-server

service-worker

platform-server

Breaking Changes

core

core

core

platform-server

[v20.2.3](https://redirect.

Configuration

renovate Bot commented Jun 15, 2026 •

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[`v20.2.3`](https://redirect.

renovate Bot commented Jun 15, 2026 •

edited

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