CVE-2025-66412
Modified Modified - Updated After Analysis
BaseFortify

Publication date: 2025-12-01

Last updated on: 2026-06-02

Assigner: GitHub, Inc.

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.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2025-12-01
Last Modified
2026-06-02
Generated
2026-06-16
AI Q&A
2025-12-02
EPSS Evaluated
2026-06-14
NVD
CVE-2025-66412
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
angular angular to 18.2.14 (inc)
angular angular From 19.0.0 (inc) to 19.2.17 (exc)
angular angular From 20.0.0 (inc) to 20.3.15 (exc)
angular angular From 21.0.0 (inc) to 21.0.2 (exc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) issue in the Angular Template Compiler. It happens because the compiler's internal security schema is incomplete and does not properly classify certain URL-holding attributes that could contain malicious javascript: URLs. This allows attackers to bypass Angular's built-in security sanitization and inject malicious scripts into applications.

Impact Analysis

This vulnerability can allow attackers to inject malicious scripts into Angular applications, potentially leading to unauthorized actions, data theft, or compromise of user sessions. It poses a high security risk as it can be exploited remotely with low complexity and may result in significant impact on confidentiality, integrity, and availability of affected applications.

Mitigation Strategies

To mitigate this vulnerability, immediately upgrade Angular to version 21.0.2, 20.3.15, or 19.2.17 or later, as these versions contain the fix for the Stored Cross-Site Scripting (XSS) vulnerability in the Angular Template Compiler.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2025-66412. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart