CVE-2026-88059 (Medium) detected in common-13.0.2.tgz

[mend-bolt-for-github]

CVE-2026-88059 - Medium Severity Vulnerability

Vulnerable Library - common-13.0.2.tgz

Angular - commonly needed directives and services

Library home page: https://registry.npmjs.org/@⁠angular/common/-/common-13.0.2.tgz

Sample Path to Dependency File: /package.json

Path to vulnerable library: /node_modules/@⁠angular/common/package.json

Dependency Hierarchy:

• ❌ common-13.0.2.tgz (Vulnerable Library)

Found in HEAD commit: 977ea6ccaaf2045985ee40cacd5f6d676fa1a047

Found in base branch: master

Vulnerability Details

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.28, 21.2.20, and 22.1.1, Angular's @⁠angular/common HttpTransferCache can cache an authenticated response when Server-Side Rendering (SSR) and hydration use a hierarchical HttpClient configured with withRequestsMadeViaParent. The child TransferCache evaluates an initially anonymous request before delegation, then a parent withInterceptors chain adds an Authorization header, cookie, or API token; although the parent cache skips the authenticated request, the child still stores the private response in TransferState serialized as JSON in the ng-state script. Exploitation requires provideClientHydration, child provideHttpClient delegation through withRequestsMadeViaParent, parent-level credential injection, and an SSR HTML response shared across users by a CDN, reverse proxy, or application cache. A later unauthenticated or unauthorized visitor can receive the cached HTML containing the earlier authenticated user's sensitive response data. Applications can mitigate by attaching credentials at the child, filtering sensitive endpoints with withHttpTransferCacheOptions, disabling transfer caching for sensitive routes, or marking personalized HTML private or no-store. This issue is fixed in versions 20.3.28, 21.2.20, and 22.1.1.

Publish Date: 2026-09-10

URL: CVE-2026-88059

CVSS 3 Score Details (4.0)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: None
  • Scope: Changed
• Impact Metrics:
  • Confidentiality Impact: Low
  • Integrity Impact: None
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2026-09-10

Fix Resolution: https://github.com/angular/angular.git - v21.2.20,https://github.com/angular/angular.git - v20.3.28,https://github.com/angular/angular.git - v22.1.1

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