{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-50556", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-04T21:34:34.426Z", "datePublished": "2026-06-22T15:38:28.166Z", "dateUpdated": "2026-06-22T21:17:45.731Z"}, "containers": {"cna": {"title": "Angular: Missing `<noscript>` Raw-Text Serialization Escaping leads to Cross-Site Scripting (XSS) in Angular SSR", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH", "vectorString": "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", "version": "4.0"}}], "references": [{"name": "https://github.com/angular/angular/security/advisories/GHSA-gxx4-3xcv-f8qx", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/angular/angular/security/advisories/GHSA-gxx4-3xcv-f8qx"}, {"name": "https://github.com/angular/angular/issues/68903", "tags": ["x_refsource_MISC"], "url": "https://github.com/angular/angular/issues/68903"}, {"name": "https://github.com/angular/domino/pull/29", "tags": ["x_refsource_MISC"], "url": "https://github.com/angular/domino/pull/29"}], "affected": [{"vendor": "angular", "product": "angular", "versions": [{"version": ">= 22.0.0-next.0, < 22.0.0-rc.2", "status": "affected"}, {"version": ">= 21.0.0-next.0, < 21.2.16", "status": "affected"}, {"version": ">= 20.0.0-next.0, < 20.3.24", "status": "affected"}, {"version": ">= 19.0.0-next.0, < 19.2.25", "status": "affected"}, {"version": "<= 18.2.14", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-22T15:38:28.166Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-gxx4-3xcv-f8qx", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-22T21:14:35.418340Z", "id": "CVE-2026-50556", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-22T21:17:45.731Z"}}]}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[22.0.0-next.0,22.0.0-rc.2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[21.0.0-next.0,21.2.16)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[20.0.0-next.0,20.3.24)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[19.0.0-next.0,19.2.25)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,18.2.14]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "angular", "source": "cna", "vendor": "angular"}, "product": "angular", "vendor": "angular"}], "created": "2026-06-22T18:30:15.401673+00:00", "updated": "2026-06-22T20:30:06.168883+00:00", "vendors": ["angular", "angular$PRODUCT$angular"]}