chore(deps): update dependency @angular/common to v22.1.1 [security] by renovate[bot] · Pull Request #261 · TanStack/pacer

renovate · 2026-09-11T12:49:15Z

This PR contains the following updates:

Package	Change	Age	Confidence
@angular/common (source)	`22.1.0` → `22.1.1`

Angular: Information Leak via `HttpTransferCache` Bypass When Using `withRequestsMadeViaParent`

CVE-2026-88059 / GHSA-p297-fm68-3q8c

More information

Details

A security bypass vulnerability was discovered in @angular/common when Server-Side Rendering (SSR) and hydration are enabled in applications using a hierarchical HttpClient configuration with withRequestsMadeViaParent().

The HttpTransferCache utility optimizes hydration by caching outgoing HTTP requests performed during SSR and transferring the cached state to the client-side application via TransferState (serialized as JSON in <script id="ng-state">). Following the remediation of CVE-2026-50170, HttpTransferCache automatically skips caching requests that contain authentication headers or credentials (Authorization, Cookie, withCredentials, etc.).

However, when a child HttpClient delegates to a parent client via withRequestsMadeViaParent(), the child's TransferCache interceptor evaluates whether the request is eligible for caching before delegating to the parent client's interceptor chain.

If an outgoing request originates as anonymous from the child client, the child TransferCache marks the request as cacheable. When the request reaches a parent interceptor that injects sensitive authentication credentials (such as an Authorization header or API token), the parent TransferCache correctly skips caching the authenticated request. However, when the backend returns the private, authenticated response, the child TransferCache still stores the response in TransferState based on its initial pre-delegation evaluation.

Impact

Successful exploitation allows sensitive, user-specific information belonging to an authenticated user to be leaked to unauthenticated or unauthorized users. This occurs when:

During SSR, a child HttpClient initiates an unauthenticated request that is subsequently authenticated by a parent interceptor.
The authenticated response body is cached into the SSR-rendered HTML page (TransferState).
The rendered HTML page is stored by a shared caching layer (e.g., CDN, edge cache, or reverse proxy) or served across user sessions.
Subsequent visitors requesting the same page receive the cached HTML containing the previous user's private data.

Attack Preconditions & Vulnerable Configurations

An application is affected only if all of the following conditions are met:

SSR and Hydration Enabled: The application uses Server-Side Rendering with hydration enabled (e.g., via provideClientHydration()).
Hierarchical HttpClient with Delegation: The application configures a child HttpClient using withRequestsMadeViaParent().
Parent-Level Authentication Injection: Authentication credentials (such as Authorization headers, session cookies, or custom API tokens filtered via withHttpTransferCacheOptions) are attached by an interceptor in the parent injector chain rather than on the initial child request.
Shared HTML Caching: The SSR HTML responses are cached by a shared caching layer (CDN, reverse proxy, or application-level HTML cache).

Vulnerable Code Pattern Example

// Parent Injector / Application Config
export const appConfig: ApplicationConfig = {
  providers: [
    provideHttpClient(
      // Parent interceptor attaches sensitive Authorization header
      withInterceptors([
        (req, next) => next(req.clone({ setHeaders: { Authorization: `Bearer ${getToken()}` } }))
      ])
    ),
  ],
};

// Child Injector / Feature or Component Config
const childClient = createEnvironmentInjector(
  [
    // Child delegates to parent; TransferCache evaluates req BEFORE parent auth interceptor runs
    provideHttpClient(withRequestsMadeViaParent()),
  ],
  parentInjector
).get(HttpClient);

// Request originates without auth headers -> marked cacheable by child TransferCache
childClient.get('/api/user/profile').subscribe();

Patches

The issue is resolved by updating @angular/common to run root interceptors in the terminal request chain so that delegated clients leave inherited root interceptors to the parent chain, preventing duplicate execution and ensuring HttpTransferCache evaluates cache eligibility after parent request interceptors run.

22.1.1
21.2.20
20.3.28

Workarounds & Mitigations

For applications that cannot immediately upgrade to a patched version, use one of the following mitigations:

Attach Credentials Before or Within the Child Client: Ensure authentication headers (e.g., Authorization) are attached directly when constructing the request or via an interceptor configured directly on the child HttpClient, rather than relying solely on parent interceptors.
Apply Explicit Cache Filters on the Child Client: Configure withHttpTransferCacheOptions with a filter on the child client that explicitly excludes endpoints returning user-specific or sensitive data:
```
provideClientHydration(
  withHttpTransferCacheOptions({
    filter: (req) => !req.url.includes('/api/private/'),
  })
)
```
Disable HTTP Transfer Cache for Sensitive Routes: If specific SSR routes handle user-authenticated data, disable transfer caching for those requests or ensure the SSR response sets Cache-Control: no-store / private headers at your edge/CDN layer so personalized HTML is never shared.

Severity

CVSS Score: 4.0 / 10 (Medium)
Vector String: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N

References

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

Release Notes

angular/angular (@angular/common)

`v22.1.1`

Compare Source

core

Commit	Type	Description
aa6d3189c1	fix	initialize hydration triggers after late runtime activation
deecb301c8	fix	warn when style property bindings receive invalid values

http

Commit	Type	Description
ac3728e79f	fix	avoid aborting completed requests in FetchBackend
688a0a7118	fix	respect content-type charset in fetch backend text decoder
a13b968451	fix	run root interceptors in the terminal request chain
32af9b525e	fix	strip RFC 6265 DQUOTE characters and handle URIError in parseCookieValue

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coderabbitai · 2026-09-11T12:49:36Z

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socket-security · 2026-09-11T12:50:01Z

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	@angular/common@22.1.0 ⏵ 22.1.1	⁺¹	⁺²	⁺¹

View full report

nx-cloud · 2026-09-11T12:50:11Z

View your CI Pipeline Execution ↗ for commit cdc9ec2

Command	Status	Duration	Result
`nx run-many --targets=build --exclude=examples/**`	✅ Succeeded	10s	View ↗

☁️ Nx Cloud last updated this comment at 2026-09-11 12:50:11 UTC

pkg-pr-new · 2026-09-11T12:52:27Z

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commit: cdc9ec2

chore(deps): update dependency @angular/common to v22.1.1 [security]

cdc9ec2

renovate Bot added the dependencies label Sep 11, 2026

renovate Bot merged commit 9233835 into main Sep 11, 2026
9 checks passed

renovate Bot deleted the renovate/npm-angular-common-vulnerability branch September 11, 2026 21:32

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chore(deps): update dependency @angular/common to v22.1.1 [security] - #261

chore(deps): update dependency @angular/common to v22.1.1 [security]#261
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renovate Bot commented Sep 11, 2026

Angular: Information Leak via HttpTransferCache Bypass When Using withRequestsMadeViaParent

Details

Impact

Attack Preconditions & Vulnerable Configurations

Vulnerable Code Pattern Example

Patches

Workarounds & Mitigations

Severity

References

Release Notes

v22.1.1

core

http

Configuration

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Angular: Information Leak via `HttpTransferCache` Bypass When Using `withRequestsMadeViaParent`

`v22.1.1`