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.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50556.json",
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-79"
]
}{
"source": [
"CPE_RANGE",
"CPE_STRING"
],
"cpe": [
"cpe:2.3:a:angularjs:angularjs:*:*:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next0:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next1:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next10:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next11:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next12:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next2:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next3:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next4:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next5:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next6:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next7:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next8:*:*:*:*:*:*",
"cpe:2.3:a:angularjs:angularjs:22.0.0:next9:*:*:*:*:*:*"
],
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "18.2.14"
},
{
"introduced": "19.0.0"
},
{
"fixed": "19.2.25"
},
{
"introduced": "20.0.0"
},
{
"fixed": "20.3.24"
},
{
"introduced": "21.0.0"
},
{
"fixed": "21.2.16"
},
{
"introduced": "22.0.0-next0"
},
{
"last_affected": "22.0.0-next0"
},
{
"introduced": "22.0.0-next1"
},
{
"last_affected": "22.0.0-next1"
},
{
"introduced": "22.0.0-next10"
},
{
"last_affected": "22.0.0-next10"
},
{
"introduced": "22.0.0-next11"
},
{
"last_affected": "22.0.0-next11"
},
{
"introduced": "22.0.0-next12"
},
{
"last_affected": "22.0.0-next12"
},
{
"introduced": "22.0.0-next2"
},
{
"last_affected": "22.0.0-next2"
},
{
"introduced": "22.0.0-next3"
},
{
"last_affected": "22.0.0-next3"
},
{
"introduced": "22.0.0-next4"
},
{
"last_affected": "22.0.0-next4"
},
{
"introduced": "22.0.0-next5"
},
{
"last_affected": "22.0.0-next5"
},
{
"introduced": "22.0.0-next6"
},
{
"last_affected": "22.0.0-next6"
},
{
"introduced": "22.0.0-next7"
},
{
"last_affected": "22.0.0-next7"
},
{
"introduced": "22.0.0-next8"
},
{
"last_affected": "22.0.0-next8"
},
{
"introduced": "22.0.0-next9"
},
{
"last_affected": "22.0.0-next9"
}
]
}