# CVE-2026-54264

## Summary

- **CVE ID:** CVE-2026-54264
- **Severity:** HIGH
- **CVSS Score:** 8.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N)
- **CWE:** CWE-200, CWE-359
- **Published:** Jun 22, 2026
- **Last Modified:** Jun 23, 2026

## 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.

## Affected Products

- angular — angular (>= 22.0.0-next.0 < 22.0.1)
- angular — angular (>= 21.0.0-next.0 < 21.2.17)
- angular — angular (>= 20.0.0-next.0 < 20.3.25)
- angular — angular (<= 19.2.25)

## References

- [CNA](https://github.com/angular/angular/security/advisories/GHSA-qxh6-94w6-9r5p)
- [CNA](https://github.com/angular/angular/pull/69029)
- [CNA](https://github.com/angular/angular/commit/47d68dcb26266316647133ab6385e77fc3e5ae08)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.39%
- **EPSS Percentile:** 32.4

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._