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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| angular | angular | >= 21.0.0-next.0 < 21.0.2, >= 20.0.0-next.0 < 20.3.15, >= 19.0.0-next.0 < 19.2.17, <= 18.2.14 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | angular.js | No fix yet | — |
| Ubuntu 26.04 LTS | angular.js | No fix yet | — |
| Ubuntu 25.10 | angular.js | No fix yet | — |
| Ubuntu 24.04 LTS | angular.js | No fix yet | — |
| Ubuntu 22.04 LTS | angular.js | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | angular.js | No fix yet | — |
| Ubuntu Pro 18.04 LTS | angular.js | No fix yet | — |
| Ubuntu Pro 16.04 LTS | angular.js | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Jboss Enterprise Application Platform Eus 7 | eap7-apache-cxf +3 | 3.4.10-4.SP2_redhat_00004.1.el7eap | RHSA-2026:33371 |
| Red Hat Jboss Enterprise Application Platform Eus 7 | eap7-undertow | 2.0.41-8.SP9_redhat_00001.1.el7eap | RHSA-2026:33371 |
| Red Hat Jboss Enterprise Application Platform Eus 7 | eap7-wildfly +4 | 7.3.18-3.GA_redhat_00001.1.el7eap | RHSA-2026:33371 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | katib-earlystopping +8 | 0.19.0-r31 | — |
| Wolfi rolling | katib-suggestion-goptuna-compat | 0.19.0-r40 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | @angular/compiler | >= 21.0.0-next.0, < 21.0.2 | 21.0.2 | GHSA-v4hv-rgfq-gp49 |
| npm | @angular/compiler | >= 20.0.0-next.0, < 20.3.15 | 20.3.15 | GHSA-v4hv-rgfq-gp49 |
| npm | @angular/compiler | >= 19.0.0-next.0, < 19.2.17 | 19.2.17 | GHSA-v4hv-rgfq-gp49 |
| npm | @angular/compiler | <= 18.2.14 | — | GHSA-v4hv-rgfq-gp49 |
Advisories 8
- RHSA-2026:33371 Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.3.18 security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- ICSA-26-188-05 Siemens SINEC OS CISA ICS & IT advisories · Jul 7, 2026
- WID-SEC-2025-2708 Angular: Schwachstelle ermöglicht Cross-Site Scripting BSI CERT-Bund (WID) · Jun 29, 2026
- SSA-253495 SSA-253495: Multiple Vulnerabilities in SINEC OS before V4.0 Siemens ProductCERT · Jun 2, 2026
- WID-SEC-2026-0778 Dell Secure Connect Gateway Policy Manager: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 2026
- ICSA-26-071-03 Siemens SIDIS Prime CISA ICS & IT advisories · Mar 12, 2026
- NCSC-2026-0079 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Mar 10, 2026
- SSA-485750 SSA-485750: Multiple Vulnerabilities in SIDIS Prime Before V4.0.800 Siemens ProductCERT · Mar 10, 2026