{
    "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": "2026-09-11T15:14:37.967Z"
    },
    "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"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/angular/angular/security/advisories/GHSA-j3r3-mxqp-r2p4",
                        "tags": [
                            "exploit"
                        ]
                    },
                    {
                        "url": "https://github.com/angular/angular/issues/70146",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-11T15:14:28.505071Z",
                                "id": "CVE-2026-88058",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "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": "2026-09-11T15:14:37.967Z"
                }
            }
        ]
    }
}