CVE-2026-54264
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.
- Score
- CVSS 4.0 8.3 High
- Status
- Analyzed - security-advisories@github.com
- Published
- 2026-06-22
- Last modified
- 2026-06-23
- Weaknesses
- CWE-200, CWE-359
Affected products
References
- https://github.com/angular/angular/commit/47d68dcb26266316647133ab6385e77fc3e5ae08
- https://github.com/angular/angular/pull/69029
- https://github.com/angular/angular/security/advisories/GHSA-qxh6-94w6-9r5p
