{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-66300",
        "assignerOrgId": "9119a7d8-5eab-497f-8521-727c672e3725",
        "state": "PUBLISHED",
        "assignerShortName": "cisa-cg",
        "dateReserved": "2026-07-24T15:58:38.179Z",
        "datePublished": "2026-08-04T18:51:27.626Z",
        "dateUpdated": "2026-08-04T18:58:36.936Z"
    },
    "containers": {
        "cna": {
            "descriptions": [
                {
                    "lang": "en",
                    "value": "SNOMED International Snowstorm contains a reflected XSS vulnerability within the \"Web Route\" redirection functionality. An attacker can inject arbitrary JavaScript which will execute upon a target user navigating to a crafted, malicious link. Fixed in 10.12.2 and 10.9.3."
                }
            ],
            "affected": [
                {
                    "vendor": "SNOMED International",
                    "product": "Snowstorm",
                    "defaultStatus": "unknown",
                    "versions": [
                        {
                            "version": "7.0.0",
                            "status": "affected",
                            "lessThan": "10.12.2",
                            "versionType": "custom"
                        },
                        {
                            "version": "10.12.2",
                            "status": "unaffected"
                        },
                        {
                            "version": "10.9.3",
                            "status": "unaffected"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
                            "lang": "en",
                            "type": "CWE",
                            "cweId": "CWE-79"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "scope": "UNCHANGED",
                        "version": "3.1",
                        "baseScore": 5,
                        "attackVector": "NETWORK",
                        "baseSeverity": "MEDIUM",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L",
                        "integrityImpact": "LOW",
                        "userInteraction": "REQUIRED",
                        "attackComplexity": "HIGH",
                        "availabilityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "confidentialityImpact": "LOW"
                    }
                },
                {
                    "cvssV4_0": {
                        "version": "4.0",
                        "baseScore": 2.3,
                        "attackVector": "NETWORK",
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                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
                        "userInteraction": "PASSIVE",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "NONE",
                        "subIntegrityImpact": "NONE",
                        "vulnIntegrityImpact": "LOW",
                        "subAvailabilityImpact": "NONE",
                        "vulnAvailabilityImpact": "LOW",
                        "subConfidentialityImpact": "NONE",
                        "vulnConfidentialityImpact": "LOW"
                    }
                },
                {
                    "other": {
                        "type": "ssvc",
                        "content": {
                            "timestamp": "2026-08-04T16:06:49.793385Z",
                            "id": "CVE-2026-66300",
                            "options": [
                                {
                                    "Exploitation": "none"
                                },
                                {
                                    "Automatable": "no"
                                },
                                {
                                    "Technical Impact": "partial"
                                }
                            ],
                            "role": "CISA Coordinator",
                            "version": "2.0.3"
                        }
                    }
                }
            ],
            "title": "SNOMED International Snowstorm reflected XSS",
            "references": [
                {
                    "name": "url",
                    "url": "https://github.com/IHTSDO/snowstorm/commit/575b555695811110dafe2fcea7dd2fd7e4bcee39",
                    "tags": [
                        "patch"
                    ]
                },
                {
                    "name": "url",
                    "url": "https://github.com/IHTSDO/snowstorm/commit/b8061add427c930b3030549e77aa23ec5957ceb6",
                    "tags": [
                        "patch"
                    ]
                },
                {
                    "name": "url",
                    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66300",
                    "tags": [
                        "vdb-entry"
                    ]
                },
                {
                    "name": "url",
                    "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-212-01.json",
                    "tags": [
                        "third-party-advisory"
                    ]
                }
            ],
            "credits": [
                {
                    "value": "Michael Milkovich, CISA",
                    "lang": "en"
                },
                {
                    "value": "Karl Meister, CISA",
                    "lang": "en"
                }
            ],
            "datePublic": "2026-07-24T00:00:00.000Z",
            "providerMetadata": {
                "orgId": "9119a7d8-5eab-497f-8521-727c672e3725",
                "shortName": "cisa-cg",
                "dateUpdated": "2026-08-04T18:51:27.626Z"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-04T18:58:26.743125Z",
                                "id": "CVE-2026-66300",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-08-04T18:58:36.936Z"
                }
            }
        ]
    }
}