---
cve: "CVE-2026-50556"
severity: "HIGH"
cvss: 8.6
epss: "24%"
vendor: "angular"
kev: false
exploited: false
published: "2026-06-22 18:16:43"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T17:30:25+02:00"
---

# CVE-2026-50556

> 8.6 HIGH · 🧪 PoC

## Beschreibung

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.0-rc.2, 21.2.16, 20.3.24, and 19.2.25, a Cross-Site Scripting (XSS) vulnerability exists in @angular/platform-server's DOM emulation dependency (domino) when serializing the content of  elements. When rendering dynamic text content inside a  element via template bindings (such as {{ value }} or [textContent]), the template engine expects the browser to render the content safely. Under Server-Side Rendering (SSR), domino is configured with scripting enabled, meaning  is treated as a raw-text element. However, domino's serializer completely omitted  from the list of raw-text elements requiring closing-tag escaping during DOM serialization. As a result, any occurrence of  in the bound dynamic text was never escaped under any circumstances. The unescaped closing tag was serialized directly into the output HTML (e.g. alert(1)). When parsed by a browser, it closes the  block early, allowing the injected  block to execute in the user's browser context, causing same-origin Cross-Site Scripting (XSS). This vulnerability is fixed in 22.0.0-rc.2, 21.2.16, 20.3.24, and 19.2.25.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |

## Patch verfügbar (OSV)

- 6d1753b46b7389c10aa17da2327043fbf5296035 (Commit)
- c56f1ec3c349d76b1a99bd292feef10b7b8c9b4f (Commit)

## Referenzen

- <https://github.com/angular/angular/security/advisories/GHSA-gxx4-3xcv-f8qx>
- <https://github.com/angular/angular/issues/68903>
- <https://github.com/angular/domino/pull/29>
- <https://access.redhat.com/security/cve/CVE-2026-50556>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2491459>
- <https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50556.json>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-50556) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_