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chore(deps): update dependency @angular/compiler to v20.3.15 [security] #297

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Note: This PR body was truncated due to platform limits.

This PR contains the following updates:

Package Change Age Confidence
@angular/compiler (source) 20.1.2 -> 20.3.15 age confidence

GitHub Vulnerability Alerts

CVE-2025-66412

A Stored Cross-Site Scripting (XSS) vulnerability has been identified in the Angular Template Compiler. It occurs because the compiler's internal security schema is incomplete, allowing attackers to bypass Angular's built-in security sanitization. Specifically, the schema fails to classify certain URL-holding attributes (e.g., those that could contain javascript: URLs) as requiring strict URL security, enabling the injection of malicious scripts.

Additionally, a related vulnerability exists involving SVG animation elements (<animate>, <set>, <animateMotion>, <animateTransform>). The attributeName attribute on these elements was not properly validated, allowing attackers to dynamically target security-sensitive attributes like href or xlink:href on other elements. By binding attributeName to "href" and providing a javascript: URL in the values or to attribute, an attacker could bypass sanitization and execute arbitrary code.

Attributes confirmed to be vulnerable include:

  • SVG-related attributes: (e.g., xlink:href), and various MathML attributes (e.g., math|href, annotation|href).
  • SVG animation attributeName attribute when bound to "href" or "xlink:href".

When template binding is used to assign untrusted, user-controlled data to these attributes (e.g., [attr.xlink:href]="maliciousURL" or <animate [attributeName]="'href'" [values]="maliciousURL">), the compiler incorrectly falls back to a non-sanitizing context or fails to block the dangerous attribute assignment. This allows an attacker to inject a javascript:URL payload. Upon user interaction (like a click) on the element, or automatically in the case of animations, the malicious JavaScript executes in the context of the application's origin.

Impact

When exploited, this vulnerability allows an attacker to execute arbitrary code within the context of the vulnerable application's domain. This enables:

  • Session Hijacking: Stealing session cookies and authentication tokens.
  • Data Exfiltration: Capturing and transmitting sensitive user data.
  • Unauthorized Actions: Performing actions on behalf of the user.

Patches

  • 19.2.17
  • 20.3.15
  • 21.0.2

Attack Preconditions

  • The victim's Angular application must render data derived from untrusted input (e.g., from a database or API) and bind it to one of the unsanitized URL attributes or the attributeName of an SVG animation element.
  • The victim must perform a user interaction (e.g., clicking) on the compromised element for the stored script to execute, or the animation must trigger the execution.

Workarounds

If you cannot upgrade, you can workaround the issue by ensuring that any data bound to the vulnerable attributes is never sourced from untrusted user input (e.g., database, API response, URL parameters).

  • Avoid Affected Template Bindings: Specifically avoid using template bindings (e.g., [attr.xlink:href]="maliciousURL") to assign untrusted data to the vulnerable SVG/MathML attributes.
  • Avoid Dynamic attributeName on SVG Animations: Do not bind untrusted data to the attributeName attribute of SVG animation elements (<animate>, <set>, etc.).
  • Enable Content Security Policy (CSP): Configure a robust CSP header that disallows javascript: URLs.

Release Notes

angular/angular (@​angular/compiler)

v20.3.15

Compare Source

compiler
Commit Type Description
d1ca8ae043 fix prevent XSS via SVG animation attributeName and MathML/SVG URLs

v20.3.14

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http
Commit Type Description
0276479e7d fix prevent XSRF token leakage to protocol-relative URLs

v20.3.13

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v20.3.12

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v20.3.11

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common
Commit Type Description
5047849a4a fix remove placeholder image listeners once view is removed
compiler
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()
core
Commit Type Description
dcdd1bcdbb fix skip leave animations on view swaps

v20.3.10

Compare Source

compiler-cli
Commit Description
fix - 840db59dc1 make required inputs diagnostic less noisy
migrations
Commit Description
fix - a45e6b2b66 Prevent removal of templates referenced with preceding whitespace characters

v20.3.9

Compare Source

v20.3.7

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animations
Commit Type Description
bd38cd45a5 fix account for Element.animate exceptions (#​64506)
compiler
Commit Type Description
891f180262 fix correctly compile long numeric HTML entities (#​64297)
compiler-cli
Commit Type Description
371274bfc6 fix missingStructuralDirective diagnostic produces false negatives (#​64470)
core
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)
router
Commit Type Description
cfd8ed3fff fix Fix outlet serialization and parsing with no primary children (#​64505)
182fe78f91 fix Surface parse errors in Router.parseUrl (#​64503)

v20.3.6

Compare Source

core
Commit Type Description
911d6822cb fix update animation scheduling (#​64441)
platform-browser
Commit Type Description
2ece42866d fix DomEventsPlugin should always be the last plugin to be called for supports(). (#​50394)

v20.3.5

Compare Source

compiler-cli
Commit Type Description
8dec92ff9f fix capture metadata for undecorated fields (#​63957) (#​64317)
c2e817b0ef perf fix performance of "interpolated signal not invoked" check (#​64410)
core
Commit Type Description
f15cfa4cc4 fix fixes regression in animate.leave function bindings (#​64413)
d54dd674ca fix Prevents early style pruning with leave animations (#​64335)
migrations
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)
router
Commit Type Description
6e4bcc7d22 fix Scroll restoration should use instant scroll behavior for traversals (#​64299)

v20.3.4

Compare Source

core
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)
migrations
Commit Type Description
65884895ff fix preserve component imports when pruning NgModules in standalone migration (#​64186)

v20.3.3

Compare Source

compiler
Commit Type Description
f51ab32fb3 fix recover template literals with broken expressions (#​64150)
core
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)
migrations
Commit Type Description
1710cbd7d4 fix handle shorthand property declarations in NgModule (#​64160)
77b6305a4b fix skip migration for inputs with 'this' references (#​64142)

v20.3.2

Compare Source

compiler-cli
Commit Type Description
ba40153ac0 fix capture metadata for undecorated fields (#​63904)
1d4f81c8ee fix resolve import alias in defer blocks (#​63966)
core
Commit Type Description
9515a70933 fix fix narrowing of Resource.hasValue() (#​63994)
e78451cf8a fix prevent animations renderer from impacting animate.leave (#​63921)
forms
Commit Type Description
1fd8d5d446 fix Emit FormResetEvent when resetting control (#​64034)
migrations
Commit Type Description
16d0d43ad4 fix handle import aliases to the same module name (#​63934)
3ebaeccb46 fix handle reused templates in control flow migration (#​63996)

v20.3.1

Compare Source

compiler
Commit Type Description
7fb5a8087e fix Add support for aria-invalid (#​63748)
compiler-cli
Commit Type Description
8843707919 fix only bind inputs that are part of microsyntax to a structural directive (#​52453)
38c9921ff3 fix signal not invoked diagnostic not raised when input has same name in template (#​63754)
core
Commit Type Description
802dbcc2a0 fix prevent animation events from being cleaned up on destroy (#​63414)
3ec8a5c753 fix Prevent leave animations on a move operation (#​63745)
migrations
Commit Type Description
6e54bdfdcb fix fix route-lazy-loading migration (#​63818)

v20.3.0

Compare Source

Breaking Changes

core

  • The server-side bootstrapping process has been changed to eliminate the reliance on a global platform injector.

    Before:

    const bootstrap = () => bootstrapApplication(AppComponent, config);

    After:

    const bootstrap = (context: BootstrapContext) =>
  bootstrapApplication(AppComponent, config, context);

    A schematic is provided to automatically update main.server.ts files to pass the BootstrapContext to the bootstrapApplication call.

    In addition, getPlatform() and destroyPlatform() will now return null and be a no-op respectively when running in a server environment.

    (cherry picked from commit 8bf80c9)

Commit Type Description
a3f808d7c8 fix remove refresh button from transfer state tab (#​63592)
core
Commit Type Description
6117ccee2e feat introduce BootstrapContext for improved server bootstrapping (#​63636)

v20.2.4

Compare Source

core
Commit Type Description
dc64f3e478 fix Fixed inject migration schematics for migrate destructured properties (#​62832)
platform-server
Commit Type Description
d1d32db972 fix prevent false warning for duplicate state serialization (#​63525)

v20.2.3

Compare Source

compiler
Commit Type Description
479a919f42 fix fixes regression with event parsing and animate prefix (#​63470)
core
Commit Type Description
f87fad3fff fix avoid injecting internal error handler from a destroyed injector (#​62275)
114906d2d6 fix Fix cancellation of animation enter classes (#​63442)
596b545130 fix Prevent an error on cleanup when an rxResource stream threw before returning an Observable (#​63342)

v20.2.2

Compare Source

compiler
Commit Type Description
d7b6045d61 fix fixes animations on elements with structural directives (#​63390)
core
Commit Type Description
6c421ed65d fix Ensures @for loop animations never get cancelled (#​63328)
9093e0e132 fix fix memory leak with leaving nodes tracking (#​63328)
c8f07daf8f fix Fixes animate.leave binding to a string with spaces (#​63366)

v20.2.1

Compare Source

compiler
Commit Type Description
a28672fb70 fix Keep paraenthesis in Nullish + Boolean expression. (#​63292)

v20.2.0

Compare Source

Deprecations

animations
core
router
  • The Router.getCurrentNavigation method is deprecated. Use the Router.currentNavigation signal instead.
  • The Router.getCurrentNavigation method is deprecated. Use the Router.currentNavigation signal instead.
animations
Commit Type Description
9766116cea refactor deprecate the animations package (#​62795)
compiler
Commit Type Description
7767aa640c fix allow more characters in square-bracketed attribute names (#​62742)
7b51728813 fix fixes animation event host bindings not firing (#​63217)
compiler-cli
Commit Type Description
5abfe4a899 feat add diagnostic for uninvoked functions in text interpolation (#​59191)
c4917074f1 fix display proper function in NG8117 message (#​62842)
812463c563 fix Ignore diagnostics on ngTemplateContextGuard lines in TCB (#​63054)
45b030b5ce fix prevent dom event assertion in TCB generation on older angular versions (#​63053)
core
Commit Type Description
6b1f4b9e8b feat add enter and leave animation instructions (#​62682)
cec91c0035 feat add option to infer the tag names of components in tests (#​62283)
141bb75ff2 feat Promote zoneless to stable (#​62699)
4138aca91f feat render ARIA property bindings as attributes (#​62630)
a409534d6c feat support as aliases on else if blocks (#​63047)
745ea44394 feat support TypeScript 5.9 (#​62541)
593cc8a368 fix checks if body exists before continuing (#​62768)
bdc31675b7 fix ensure animate events do not have duplicate elements (#​63216)
de3a0c5cf3 fix Fix animate.enter class removal when composing classes (#​62981)
6597ac0af7 fix fix support for space separated strings in leave animations (#​62979)
ebd622b344 fix fixes empty animations when recalculating styles (#​63007)
455b147488 fix fixes timing issues with enter animations (#​62925)
f9d73cc687 fix handle cases where classes added have no animations (#​63242)
6a1184600c fix prevents duplicate nodes when @if toggles with leave animations (#​63048)
063b5e166f fix switch check to documentElement with chaining (#​62773)
320de4e96d refactor deprecate animations field on component interface (#​62895)
forms
Commit Type Description
c353497a01 feat add support for pushing an array of controls to formarray (#​57102)
http
Commit Type Description
0984b30388 feat Add redirected property to HttpResponse and HttpErrorResponse (#​62675)
be811fee79 feat add referrer & integrity support for fetch requests in httpResource (#​62461)
1cf9d9064c feat Add support for fetch referrer & integrity options in HttpClient (#​62417)
1408baff45 fix Add missing timeout and transferCache options to HttpClient (#​62586)
language-service
Commit Type Description
c81e345e72 feat support auto-import for attribute completions (#​62797)
d64dd27a02 feat support to report the deprecated API in the template (#​62054)
591c7e2ec8 fix Support to resolve the re-export component. (#​62585)
platform-browser
Commit Type Description
52b8e07d6e feat Warns on conflicting hydration and blocking navigation (#​62963)
router
Commit Type Description
d00b3fed58 feat add a currentNavigation signal to the Router service. (#​62971)
687c374826 feat add a currentNavigation signal to the Router service. (#​63011)
9c45c322d1 fix ensure preloaded components are properly activated (#​62502)

Configuration

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This PR was generated by Mend Renovate. View the repository job log.

@renovate renovate bot requested a review from pascaliske as a code owner December 2, 2025 03:22
@renovate renovate bot added the dependencies Dependency related things label Dec 2, 2025
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