CVE-2026-54264
Description
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.
How to fix
- angular angular20.3.25, 21.2.17, 22.0.1 or later
- @angular/service-worker22.0.1, 21.2.17, 20.3.25 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| angular angular | v ≤ 19.2.25, 20.0.0 ≤ v < 20.3.25, 21.0.0 ≤ v < 21.2.17, 22.0.0 ≤ v < 22.0.1 | 20.3.25, 21.2.17, 22.0.1 |
| @angular/service-workernpm | 22.0.0-next.0 ≤ v < 22.0.1, 21.0.0-next.0 ≤ v < 21.2.17, 20.0.0-next.0 ≤ v < 20.3.25, v ≤ 19.2.25 | 22.0.1, 21.2.17, 20.3.25 |
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Attack Surface Management
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