CVE-2025-66412

HIGH EPSS 28.9%
Published Dec 1, 20256mo ago · Modified Jun 17, 20261w ago
8.5 CVSS 4.0
High
Find Similar
Published Dec 1, 2025 6mo ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
8.5
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction A
Scope X

Threat Intelligence

EPSS Exploit Probability
28.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 4

VendorProductVersionRange
angularangular* ≤18.2.14
angularangular*≥19.0.0  –  <19.2.17
angularangular*≥20.0.0  –  <20.3.15
angularangular*≥21.0.0  –  <21.0.2

References 4

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-253495.html
  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-485750.html
  • github.com https://github.com/angular/angular/commit/1c6b0704fb63d051fab8acff84d076abfbc4893a
    Patch
  • github.com https://github.com/angular/angular/security/advisories/GHSA-v4hv-rgfq-gp49
    Third Party Advisory

Remediation

  • github.com https://github.com/angular/angular/commit/1c6b0704fb63d051fab8acff84d076abfbc4893a
    Patch