CVE-2025-66412
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@angular/compilernpm | >= 21.0.0-next.0, < 21.0.2 | 21.0.2 |
@angular/compilernpm | >= 20.0.0-next.0, < 20.3.15 | 20.3.15 |
@angular/compilernpm | >= 19.0.0-next.0, < 19.2.17 | 19.2.17 |
@angular/compilernpm | <= 18.2.14 | — |
Affected products
3Patches
Vulnerability mechanics
References
6- github.com/angular/angular/commit/1c6b0704fb63d051fab8acff84d076abfbc4893anvdPatchWEB
- github.com/advisories/GHSA-v4hv-rgfq-gp49ghsaADVISORY
- github.com/angular/angular/security/advisories/GHSA-v4hv-rgfq-gp49nvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2025-66412ghsaADVISORY
- cert-portal.siemens.com/productcert/html/ssa-253495.htmlnvdWEB
- cert-portal.siemens.com/productcert/html/ssa-485750.htmlnvdWEB
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