CVE-2026-50556: Angular: Missing `<noscript>` Raw-Text Serialization Escaping leads to Cross-Site Scripting (XSS) in Angular SSR
Affected: angular · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 36% of scored CVEs
DescriptionCVE.org
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 <noscript> elements. When rendering dynamic text content inside a <noscript> 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 <noscript> is treated as a raw-text element. However, domino's serializer completely omitted <noscript> from the list of raw-text elements requiring closing-tag escaping during DOM serialization. As a result, any occurrence of </noscript> in the bound dynamic text was never escaped under any circumstances. The unescaped closing tag was serialized directly into the output HTML (e.g. <noscript></noscript><script>alert(1)</script></noscript>). When parsed by a browser, it closes the <noscript> block early, allowing the injected <script> 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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- angular · angular>= 22.0.0-next.0, < 22.0.0-rc.2; >= 21.0.0-next.0, < 21.2.16; >= 20.0.0-next.0, < 20.3.24; >= 19.0.0-next.0, < 19.2.25; <= 18.2.14
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Weakness
- Cross-site Scripting
- Vendor
- angular
- Published
- June 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-50556 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.
References
- NVD entrynvd.nist.gov
- CVE recordcve.org
- Weakness CWE-79cwe.mitre.org
- github.com/angular/angular/security/advisories/GHSA-gxx4-3xcv-f8github.com
- github.com/angular/angular/issues/68903github.com
- github.com/angular/domino/pull/29github.com
- access.redhat.com/security/cve/CVE-2026-50556access.redhat.com
- Issue trackerbugzilla.redhat.com
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50556.security.access.redhat.com