{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-88058", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-09-09T21:22:45.434Z", "datePublished": "2026-09-10T18:56:03.369Z", "dateUpdated": "2026-09-10T18:56:03.369Z"}, "containers": {"cna": {"title": "Angular: SSR XSS via Unescaped Processing Instruction (<?...?>) Nodes in Fallback Raw-Content Elements", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-116", "lang": "en", "description": "CWE-116: Improper Encoding or Escaping of Output", "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-j3r3-mxqp-r2p4", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/angular/angular/security/advisories/GHSA-j3r3-mxqp-r2p4"}, {"name": "https://github.com/angular/angular/issues/70146", "tags": ["x_refsource_MISC"], "url": "https://github.com/angular/angular/issues/70146"}, {"name": "https://github.com/angular/angular/commit/73d8bbd27cb46495426d4132975a1355b47ad915", "tags": ["x_refsource_MISC"], "url": "https://github.com/angular/angular/commit/73d8bbd27cb46495426d4132975a1355b47ad915"}, {"name": "https://github.com/angular/angular/commit/89b20568dfaee1ec8e0b3bcf1872acdddd2f4fef", "tags": ["x_refsource_MISC"], "url": "https://github.com/angular/angular/commit/89b20568dfaee1ec8e0b3bcf1872acdddd2f4fef"}, {"name": "https://github.com/angular/angular/commit/ba3bc47b20b3d12f5eb141ec9c651373ae4d15e8", "tags": ["x_refsource_MISC"], "url": "https://github.com/angular/angular/commit/ba3bc47b20b3d12f5eb141ec9c651373ae4d15e8"}, {"name": "https://github.com/angular/domino/commit/04f987dc08ff3736b427f50941adf1722458528f", "tags": ["x_refsource_MISC"], "url": "https://github.com/angular/domino/commit/04f987dc08ff3736b427f50941adf1722458528f"}, {"name": "https://github.com/angular/angular/releases/tag/v20.3.30", "tags": ["x_refsource_MISC"], "url": "https://github.com/angular/angular/releases/tag/v20.3.30"}, {"name": "https://github.com/angular/angular/releases/tag/v21.2.22", "tags": ["x_refsource_MISC"], "url": "https://github.com/angular/angular/releases/tag/v21.2.22"}, {"name": "https://github.com/angular/angular/releases/tag/v22.1.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/angular/angular/releases/tag/v22.1.4"}], "affected": [{"vendor": "angular", "product": "angular", "versions": [{"version": "<= 19.2.25", "status": "affected"}, {"version": ">= 20.0.0, < 20.3.30", "status": "affected"}, {"version": ">= 21.0.0, < 21.2.22", "status": "affected"}, {"version": ">= 22.0.0, < 22.1.4", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-10T18:56:03.369Z"}, "descriptions": [{"lang": "en", "value": "Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.30, 21.2.22, and 22.1.4, Angular server-side rendering (SSR) in @angular/platform-server serializes ProcessingInstruction DOM nodes inside fallback raw-content elements without escaping matching ancestor closing tags. ProcessingInstruction data escaped greater-than characters but left less-than characters untouched and did not inspect fallback ancestors, so data such as a matching closing tag prematurely terminates noscript, iframe, noembed, or noframes containers. The vulnerable nodes cannot be authored through standard Angular templates; reachability requires application or library code using inject(DOCUMENT).createProcessingInstruction with attacker-controlled data or Renderer2 DOM insertion inside a fallback container. In HTML5 RAWTEXT parsing, the premature close causes subsequent sibling elements to be interpreted as live HTML and enables arbitrary JavaScript execution in a victim's browser. This issue is fixed in versions 20.3.30, 21.2.22, and 22.1.4."}], "source": {"advisory": "GHSA-j3r3-mxqp-r2p4", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "angular", "vendor": "angular", "versions": [{"status": "affected", "version": "<= 19.2.25"}, {"status": "affected", "version": ">= 20.0.0, < 20.3.30"}, {"status": "affected", "version": ">= 21.0.0, < 21.2.22"}, {"status": "affected", "version": ">= 22.0.0, < 22.1.4"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.30, 21.2.22, and 22.1.4, Angular server-side rendering (SSR) in @angular/platform-server serializes ProcessingInstruction DOM nodes inside fallback raw-content elements without escaping matching ancestor closing tags. ProcessingInstruction data escaped greater-than characters but left less-than characters untouched and did not inspect fallback ancestors, so data such as a matching closing tag prematurely terminates noscript, iframe, noembed, or noframes containers. The vulnerable nodes cannot be authored through standard Angular templates; reachability requires application or library code using inject(DOCUMENT).createProcessingInstruction with attacker-controlled data or Renderer2 DOM insertion inside a fallback container. In HTML5 RAWTEXT parsing, the premature close causes subsequent sibling elements to be interpreted as live HTML and enables arbitrary JavaScript execution in a victim's browser. This issue is fixed in versions 20.3.30, 21.2.22, and 22.1.4."}], "id": "CVE-2026-88058", "lastModified": "2026-09-10T19:44:21.980", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-09-10T19:17:41.800", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/angular/angular/commit/73d8bbd27cb46495426d4132975a1355b47ad915"}, {"source": "security-advisories@github.com", "url": "https://github.com/angular/angular/commit/89b20568dfaee1ec8e0b3bcf1872acdddd2f4fef"}, {"source": "security-advisories@github.com", "url": "https://github.com/angular/angular/commit/ba3bc47b20b3d12f5eb141ec9c651373ae4d15e8"}, {"source": "security-advisories@github.com", "url": "https://github.com/angular/angular/issues/70146"}, {"source": "security-advisories@github.com", "url": "https://github.com/angular/angular/releases/tag/v20.3.30"}, {"source": "security-advisories@github.com", "url": "https://github.com/angular/angular/releases/tag/v21.2.22"}, {"source": "security-advisories@github.com", "url": "https://github.com/angular/angular/releases/tag/v22.1.4"}, {"source": "security-advisories@github.com", "url": "https://github.com/angular/angular/security/advisories/GHSA-j3r3-mxqp-r2p4"}, {"source": "security-advisories@github.com", "url": "https://github.com/angular/domino/commit/04f987dc08ff3736b427f50941adf1722458528f"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}, {"lang": "en", "value": "CWE-116"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}