CVE-2026-54264: Angular

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.1, 21.2.17, and 20.3.25, 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. This allows a remote attacker to obtain sensitive credentials (e.g., Authorization tokens, Proxy-Authorization credentials, or session cookies) by triggering a cross-origin redirect to an untrusted external origin. This vulnerability is fixed in 22.0.1, 21.2.17, and 20.3.25.

Affected products

• Angular Angular: up to and including 19.2.25; from 20.0.0, before 20.3.25 (fixed in 20.3.25); from 21.0.0, before 21.2.17 (fixed in 21.2.17); from 22.0.0, before 22.0.1 (fixed in 22.0.1)

Published 2026-06-22. Last modified 2026-07-09.