Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Angular | Angular | <= 19.2.25 |
Related Weaknesses (CWE)
References
- https://github.com/angular/angular/commit/47d68dcb26266316647133ab6385e77fc3e5aePatch
- https://github.com/angular/angular/pull/69029Issue TrackingPatch
- https://github.com/angular/angular/security/advisories/GHSA-qxh6-94w6-9r5pThird Party Advisory
FAQ
What is CVE-2026-54264?
CVE-2026-54264 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 vul...
How severe is CVE-2026-54264?
CVE-2026-54264 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-54264?
Check the references section above for vendor advisories and patch information. Affected products include: Angular Angular.