Cross-site scripting in Angular - CVE-2026-52725
Published: September 11, 2026
Vulnerability identifier: #VU149001
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-52725
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary JavaScript in a target user's browser.
The vulnerability exists due to improper neutralization of input during web page generation in the Angular template preparser when compiling user-controlled templates containing custom namespace prefixes. A remote attacker can inject a namespaced script element to execute arbitrary JavaScript in a target user's browser.
Exploitation requires an application to compile user-controlled templates at runtime without separate input sanitization.
Affected software
Angular
How to mitigate CVE-2026-52725
Install security update from vendor's website.
Angular - addressed in versions 19.2.23, 20.3.22, 21.2.15, 22.0.0