Vulnerability Instance

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{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/263915?format=api",
    "vulnerability_id": "VCID-s8jp-pr6y-8qcz",
    "summary": "An issue has been discovered in GitLab CE/EE affecting versions 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2. Private GitLab instances with restricted sign-ups may be vulnerable to user enumeration to unauthenticated users through the GraphQL API.",
    "aliases": [
        {
            "alias": "CVE-2021-4191"
        }
    ],
    "fixed_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/923289?format=api",
            "purl": "pkg:deb/debian/gitlab@15.10.8%2Bds1-2?distro=sid",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/gitlab@15.10.8%252Bds1-2%3Fdistro=sid"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/923255?format=api",
            "purl": "pkg:deb/debian/gitlab@17.6.5-19?distro=sid",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/gitlab@17.6.5-19%3Fdistro=sid"
        }
    ],
    "affected_packages": [],
    "references": [
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-4191",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.92054",
                    "scoring_system": "epss",
                    "scoring_elements": "0.9971",
                    "published_at": "2026-04-29T12:55:00Z"
                },
                {
                    "value": "0.92054",
                    "scoring_system": "epss",
                    "scoring_elements": "0.99713",
                    "published_at": "2026-05-12T12:55:00Z"
                },
                {
                    "value": "0.92054",
                    "scoring_system": "epss",
                    "scoring_elements": "0.99712",
                    "published_at": "2026-05-09T12:55:00Z"
                },
                {
                    "value": "0.9226",
                    "scoring_system": "epss",
                    "scoring_elements": "0.99722",
                    "published_at": "2026-04-21T12:55:00Z"
                },
                {
                    "value": "0.9226",
                    "scoring_system": "epss",
                    "scoring_elements": "0.99723",
                    "published_at": "2026-04-24T12:55:00Z"
                },
                {
                    "value": "0.9236",
                    "scoring_system": "epss",
                    "scoring_elements": "0.99723",
                    "published_at": "2026-04-01T12:55:00Z"
                },
                {
                    "value": "0.9236",
                    "scoring_system": "epss",
                    "scoring_elements": "0.99724",
                    "published_at": "2026-04-02T12:55:00Z"
                },
                {
                    "value": "0.9236",
                    "scoring_system": "epss",
                    "scoring_elements": "0.99726",
                    "published_at": "2026-04-13T12:55:00Z"
                },
                {
                    "value": "0.9236",
                    "scoring_system": "epss",
                    "scoring_elements": "0.99725",
                    "published_at": "2026-04-04T12:55:00Z"
                },
                {
                    "value": "0.9236",
                    "scoring_system": "epss",
                    "scoring_elements": "0.99727",
                    "published_at": "2026-04-18T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-4191"
        }
    ],
    "weaknesses": [],
    "exploits": [
        {
            "date_added": null,
            "description": "This module queries the GitLab GraphQL API without authentication\n          to acquire the list of GitLab users (CVE-2021-4191). The module works\n          on all GitLab versions from 13.0 up to 14.8.2, 14.7.4, and 14.6.5.",
            "required_action": null,
            "due_date": null,
            "notes": "Stability:\n  - crash-safe\nSideEffects:\n  - ioc-in-logs\nReliability: []\n",
            "known_ransomware_campaign_use": false,
            "source_date_published": "2022-02-25",
            "exploit_type": null,
            "platform": "",
            "source_date_updated": null,
            "data_source": "Metasploit",
            "source_url": "https://github.com/rapid7/metasploit-framework/tree/master/modules/auxiliary/scanner/http/gitlab_graphql_user_enum.rb"
        }
    ],
    "severity_range_score": null,
    "exploitability": null,
    "weighted_severity": null,
    "risk_score": null,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-s8jp-pr6y-8qcz"
}