Information disclosure in Angular - CVE-2026-54264
Published: September 11, 2026
Vulnerability identifier: #VU149007
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-54264
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive credentials and session identifiers.
The vulnerability exists due to improper handling of cross-origin redirects in the Angular Service Worker asset-fetching functionality when fetching assets that are redirected to a different origin. A remote attacker can cause a cross-origin redirect to an untrusted origin to disclose sensitive credentials and session identifiers.
Exploitation requires asset-group requests to include sensitive headers or cookies.
Affected software
Angular
How to mitigate CVE-2026-54264
Install security update from vendor's website.
Angular - addressed in versions 20.3.25, 21.2.17, 22.0.1