Package Instance

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{
    "url": "http://public2.vulnerablecode.io/api/packages/40698?format=api",
    "purl": "pkg:nuget/Umbraco.Cms@15.3.1",
    "type": "nuget",
    "namespace": "",
    "name": "Umbraco.Cms",
    "version": "15.3.1",
    "qualifiers": {},
    "subpath": "",
    "is_vulnerable": true,
    "next_non_vulnerable_version": null,
    "latest_non_vulnerable_version": null,
    "affected_by_vulnerabilities": [
        {
            "url": "http://public2.vulnerablecode.io/api/vulnerabilities/71454?format=api",
            "vulnerability_id": "VCID-zm2x-n2ju-5qdp",
            "summary": "Umbraco is an ASP.NET CMS. From 15.3.1 to before 16.5.1 and 17.2.2, A privilege escalation vulnerability has been identified in Umbraco CMS. Under certain conditions, authenticated backoffice users with permission to manage users, may be able to elevate their privileges due to insufficient authorization enforcement when modifying user group memberships. The affected functionality does not properly validate whether a user has sufficient privileges to assign highly privileged roles. This vulnerability is fixed in 16.5.1 and 17.2.2.",
            "references": [
                {
                    "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2026-31834",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "0.00057",
                            "scoring_system": "epss",
                            "scoring_elements": "0.181",
                            "published_at": "2026-06-11T12:55:00Z"
                        },
                        {
                            "value": "0.00057",
                            "scoring_system": "epss",
                            "scoring_elements": "0.18257",
                            "published_at": "2026-06-14T12:55:00Z"
                        },
                        {
                            "value": "0.00057",
                            "scoring_system": "epss",
                            "scoring_elements": "0.18282",
                            "published_at": "2026-06-13T12:55:00Z"
                        },
                        {
                            "value": "0.00057",
                            "scoring_system": "epss",
                            "scoring_elements": "0.18262",
                            "published_at": "2026-06-12T12:55:00Z"
                        }
                    ],
                    "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-31834"
                },
                {
                    "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31834",
                    "reference_id": "CVE-2026-31834",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "7.2",
                            "scoring_system": "cvssv3.1",
                            "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
                        },
                        {
                            "value": "HIGH",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31834"
                },
                {
                    "reference_url": "https://github.com/advisories/GHSA-rhcg-3h8r-v6vp",
                    "reference_id": "GHSA-rhcg-3h8r-v6vp",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "HIGH",
                            "scoring_system": "cvssv3.1_qr",
                            "scoring_elements": ""
                        }
                    ],
                    "url": "https://github.com/advisories/GHSA-rhcg-3h8r-v6vp"
                },
                {
                    "reference_url": "https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-rhcg-3h8r-v6vp",
                    "reference_id": "GHSA-rhcg-3h8r-v6vp",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "7.2",
                            "scoring_system": "cvssv3.1",
                            "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
                        },
                        {
                            "value": "HIGH",
                            "scoring_system": "cvssv3.1_qr",
                            "scoring_elements": ""
                        },
                        {
                            "value": "HIGH",
                            "scoring_system": "generic_textual",
                            "scoring_elements": ""
                        },
                        {
                            "value": "Track",
                            "scoring_system": "ssvc",
                            "scoring_elements": "SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-03-11T15:52:28Z/"
                        }
                    ],
                    "url": "https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-rhcg-3h8r-v6vp"
                }
            ],
            "fixed_packages": [
                {
                    "url": "http://public2.vulnerablecode.io/api/packages/40668?format=api",
                    "purl": "pkg:nuget/Umbraco.Cms@16.5.1",
                    "is_vulnerable": false,
                    "affected_by_vulnerabilities": [],
                    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:nuget/Umbraco.Cms@16.5.1"
                },
                {
                    "url": "http://public2.vulnerablecode.io/api/packages/40670?format=api",
                    "purl": "pkg:nuget/Umbraco.Cms@17.2.2",
                    "is_vulnerable": false,
                    "affected_by_vulnerabilities": [],
                    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:nuget/Umbraco.Cms@17.2.2"
                }
            ],
            "aliases": [
                "CVE-2026-31834",
                "GHSA-rhcg-3h8r-v6vp"
            ],
            "risk_score": 4.0,
            "exploitability": "0.5",
            "weighted_severity": "8.0",
            "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-zm2x-n2ju-5qdp"
        }
    ],
    "fixing_vulnerabilities": [],
    "risk_score": "4.0",
    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:nuget/Umbraco.Cms@15.3.1"
}