CVE-2026-50184
Description
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23, an issue in the @angular/service-worker package compromises the integrity of request-policy enforcement during request reconstruction. When the Angular Service Worker intercepts network requests for matched assets, it reconstructs a new Request object using an internal helper function. During this reconstruction process, the helper function strips explicit client-defined safety parameters: the credentials configuration (such as credentials: 'omit') and the HTTP cache mode configuration (such as cache: 'no-store'). These are reverted back to standard browser-default parameters (credentials: 'same-origin' and default HTTP cache properties). This causes the browser to include active credentials (such as cookies or Authorization headers) on outbound requests where the client-side developer explicitly instructed they should be omitted, leading to potential session leaks. Additionally, it causes private or non-cacheable resources to be cached by the service worker's engine, making private page states accessible or persistent inside the client's local cache post-logout. This vulnerability is fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23.
How to fix
- angular angular19.2.23, 20.3.22, 21.2.15 or later
- @angular/service-worker22.0.0-rc.2, 21.2.15, 20.3.22, 19.2.23 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| angular angular | v ≤ 18.2.14, 19.0.0 ≤ v < 19.2.23, 20.0.0 ≤ v < 20.3.22, 21.0.0 ≤ v < 21.2.15, 22.0.0 | 19.2.23, 20.3.22, 21.2.15 |
| @angular/service-workernpm | 22.0.0-next.0 ≤ v < 22.0.0-rc.2, 21.0.0-next.0 ≤ v < 21.2.15, 20.0.0-next.0 ≤ v < 20.3.22, 19.0.0-next.0 ≤ v < 19.2.23, v ≤ 18.2.14 | 22.0.0-rc.2, 21.2.15, 20.3.22, 19.2.23 |
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Attack Surface Management
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