Server-Side Request Forgery (SSRF) in Angular - CVE-2026-41423
Published: April 20, 2026 / Updated: June 1, 2026
Vulnerability identifier: #VU126502
CSH Severity: High
CVSS v4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:L/SI:N/SA:N]
CVE-ID: CVE-2026-41423
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to server-side request forgery in Angular server-side rendering URL handling when processing protocol-relative or backslash-prefixed request URLs. A remote attacker can send a specially crafted request URL to disclose sensitive information.
Exploitation requires the application to use Angular SSR via renderModule, renderApplication, or CommonEngine, pass a pathname as the URL to the rendering method, and perform server-side HTTP requests with relative URLs or use PlatformLocation.hostname to build URLs.
Affected software
Angular
How to mitigate CVE-2026-41423
Install security update from vendor's website.
Angular - addressed in versions 19.2.21, 20.3.19, 21.2.9