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Exposure of Sensitive Information to an Unauthorized Actor in @angular/service-worker

CVE-2026-54264

  • @angular/service-worker
High
8.3/10

Summary

An information disclosure vulnerability exists in the `@angular/service-worker` package of the Angular framework. When the Service Worker fetches assets, it preserves metadata (such as headers) from the original request. However, on cross-origin redirects, the Service Worker fails to strip sensitive headers, violating the Fetch redirect algorithm. Issue has been patched in 22.0.1, 21.2.17, 20.3.25.

  • LOW
  • NETWORK
  • LOW
  • CHANGED
  • REQUIRED
  • NONE
  • LOW
  • NONE

CWE-200 - Information Exposure

An information exposure vulnerability is categorized as an information flow (IF) weakness, which can potentially allow unauthorized access to otherwise classified information in the application, such as confidential personal information (demographics, financials, health records, etc.), business secrets, and the application's internal environment.

References

Advisory Timeline

  • Published