Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 21.0.2, 20.3.15, and 19.2.17, A Stored Cross-Site Scripting (XSS) vulnerability has been identified in the Angular Template Compiler. It occurs because the compiler's internal security schema is incomplete, allowing attackers to bypass Angular's built-in security sanitization. Specifically, the schema fails to classify certain URL-holding attributes (e.g., those that could contain javascript: URLs) as requiring strict URL security, enabling the injection of malicious scripts. This vulnerability is fixed in 21.0.2, 20.3.15, and 19.2.17.
History

Sat, 06 Dec 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'}

threat_severity

Important


Tue, 02 Dec 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 02 Dec 2025 12:30:00 +0000

Type Values Removed Values Added
First Time appeared Angular
Angular angular
Vendors & Products Angular
Angular angular

Mon, 01 Dec 2025 22:45:00 +0000

Type Values Removed Values Added
Description Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 21.0.2, 20.3.15, and 19.2.17, A Stored Cross-Site Scripting (XSS) vulnerability has been identified in the Angular Template Compiler. It occurs because the compiler's internal security schema is incomplete, allowing attackers to bypass Angular's built-in security sanitization. Specifically, the schema fails to classify certain URL-holding attributes (e.g., those that could contain javascript: URLs) as requiring strict URL security, enabling the injection of malicious scripts. This vulnerability is fixed in 21.0.2, 20.3.15, and 19.2.17.
Title Angular Stored XSS Vulnerability via SVG Animation, SVG URL and MathML Attributes
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 8.5, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2025-12-01T22:35:59.211Z

Updated: 2025-12-02T14:13:07.801Z

Reserved: 2025-11-28T23:33:56.366Z

Link: CVE-2025-66412

cve-icon Vulnrichment

Updated: 2025-12-02T14:13:03.595Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-01T23:15:53.890

Modified: 2025-12-02T17:16:29.163

Link: CVE-2025-66412

cve-icon Redhat

Severity : Important

Publid Date: 2025-12-01T22:35:59Z

Links: CVE-2025-66412 - Bugzilla