Vulnerability Instance

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{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/46224?format=api",
    "vulnerability_id": "VCID-mgcb-jfts-xkge",
    "summary": "A hash collision vulnerability in JRuby allows remote attackers to\n    cause a Denial of Service condition.",
    "aliases": [
        {
            "alias": "CVE-2011-4838"
        },
        {
            "alias": "GHSA-cgqc-fqxr-q6r6"
        },
        {
            "alias": "OSV-78116"
        }
    ],
    "fixed_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/925995?format=api",
            "purl": "pkg:deb/debian/jruby@1.5.6-4?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/jruby@1.5.6-4%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/925992?format=api",
            "purl": "pkg:deb/debian/jruby@9.3.9.0%2Bds-8?distro=trixie",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-9x9w-2k98-wydm"
                },
                {
                    "vulnerability": "VCID-uxdx-abx7-fkdy"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/jruby@9.3.9.0%252Bds-8%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/925994?format=api",
            "purl": "pkg:deb/debian/jruby@9.4.8.0%2Bds-3?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/jruby@9.4.8.0%252Bds-3%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/76674?format=api",
            "purl": "pkg:ebuild/dev-java/jruby@1.6.5.1",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:ebuild/dev-java/jruby@1.6.5.1"
        }
    ],
    "affected_packages": [],
    "references": [
        {
            "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2011-4838.json",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2011-4838.json"
        },
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2011-4838",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.07274",
                    "scoring_system": "epss",
                    "scoring_elements": "0.91619",
                    "published_at": "2026-04-01T12:55:00Z"
                },
                {
                    "value": "0.07274",
                    "scoring_system": "epss",
                    "scoring_elements": "0.91625",
                    "published_at": "2026-04-02T12:55:00Z"
                },
                {
                    "value": "0.07274",
                    "scoring_system": "epss",
                    "scoring_elements": "0.91631",
                    "published_at": "2026-04-04T12:55:00Z"
                },
                {
                    "value": "0.07274",
                    "scoring_system": "epss",
                    "scoring_elements": "0.91639",
                    "published_at": "2026-04-07T12:55:00Z"
                },
                {
                    "value": "0.07274",
                    "scoring_system": "epss",
                    "scoring_elements": "0.91651",
                    "published_at": "2026-04-08T12:55:00Z"
                },
                {
                    "value": "0.07274",
                    "scoring_system": "epss",
                    "scoring_elements": "0.91658",
                    "published_at": "2026-04-09T12:55:00Z"
                },
                {
                    "value": "0.07274",
                    "scoring_system": "epss",
                    "scoring_elements": "0.91661",
                    "published_at": "2026-04-11T12:55:00Z"
                },
                {
                    "value": "0.07274",
                    "scoring_system": "epss",
                    "scoring_elements": "0.91664",
                    "published_at": "2026-04-12T12:55:00Z"
                },
                {
                    "value": "0.07274",
                    "scoring_system": "epss",
                    "scoring_elements": "0.9166",
                    "published_at": "2026-04-13T12:55:00Z"
                },
                {
                    "value": "0.07274",
                    "scoring_system": "epss",
                    "scoring_elements": "0.91681",
                    "published_at": "2026-04-16T12:55:00Z"
                },
                {
                    "value": "0.07274",
                    "scoring_system": "epss",
                    "scoring_elements": "0.91673",
                    "published_at": "2026-04-18T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2011-4838"
        },
        {
            "reference_url": "https://www.jruby.org/2011/12/27/jruby-1-6-5-1.html",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://www.jruby.org/2011/12/27/jruby-1-6-5-1.html"
        },
        {
            "reference_url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=686867",
            "reference_id": "686867",
            "reference_type": "",
            "scores": [],
            "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=686867"
        },
        {
            "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=770820",
            "reference_id": "770820",
            "reference_type": "",
            "scores": [],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=770820"
        },
        {
            "reference_url": "https://security.gentoo.org/glsa/201207-06",
            "reference_id": "GLSA-201207-06",
            "reference_type": "",
            "scores": [],
            "url": "https://security.gentoo.org/glsa/201207-06"
        }
    ],
    "weaknesses": [],
    "exploits": [],
    "severity_range_score": null,
    "exploitability": null,
    "weighted_severity": null,
    "risk_score": null,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-mgcb-jfts-xkge"
}