GET

Package Instance

Lookup for vulnerable packages by Package URL.

GET /api/packages/991734?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "http://public2.vulnerablecode.io/api/packages/991734?format=api",
    "purl": "pkg:apk/alpine/newlib@4.1.0-r0?arch=aarch64&distroversion=v3.17&reponame=community",
    "type": "apk",
    "namespace": "alpine",
    "name": "newlib",
    "version": "4.1.0-r0",
    "qualifiers": {
        "arch": "aarch64",
        "distroversion": "v3.17",
        "reponame": "community"
    },
    "subpath": "",
    "is_vulnerable": false,
    "next_non_vulnerable_version": null,
    "latest_non_vulnerable_version": null,
    "affected_by_vulnerabilities": [],
    "fixing_vulnerabilities": [
        {
            "url": "http://public2.vulnerablecode.io/api/vulnerabilities/94794?format=api",
            "vulnerability_id": "VCID-pw8g-an3z-jydv",
            "summary": "A flaw was found in newlib in versions prior to 4.0.0. Improper overflow validation in the memory allocation functions mEMALIGn, pvALLOc, nano_memalign, nano_valloc, nano_pvalloc could case an integer overflow, leading to an allocation of a small buffer and then to a heap-based buffer overflow.",
            "references": [
                {
                    "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-3420",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [
                        {
                            "value": "0.00138",
                            "scoring_system": "epss",
                            "scoring_elements": "0.33939",
                            "published_at": "2026-04-13T12:55:00Z"
                        },
                        {
                            "value": "0.00138",
                            "scoring_system": "epss",
                            "scoring_elements": "0.33977",
                            "published_at": "2026-04-16T12:55:00Z"
                        },
                        {
                            "value": "0.00138",
                            "scoring_system": "epss",
                            "scoring_elements": "0.33962",
                            "published_at": "2026-04-18T12:55:00Z"
                        },
                        {
                            "value": "0.00138",
                            "scoring_system": "epss",
                            "scoring_elements": "0.33931",
                            "published_at": "2026-04-21T12:55:00Z"
                        },
                        {
                            "value": "0.00138",
                            "scoring_system": "epss",
                            "scoring_elements": "0.33558",
                            "published_at": "2026-04-24T12:55:00Z"
                        },
                        {
                            "value": "0.00138",
                            "scoring_system": "epss",
                            "scoring_elements": "0.33537",
                            "published_at": "2026-04-26T12:55:00Z"
                        },
                        {
                            "value": "0.00138",
                            "scoring_system": "epss",
                            "scoring_elements": "0.33453",
                            "published_at": "2026-04-29T12:55:00Z"
                        },
                        {
                            "value": "0.00181",
                            "scoring_system": "epss",
                            "scoring_elements": "0.39666",
                            "published_at": "2026-04-01T12:55:00Z"
                        },
                        {
                            "value": "0.00181",
                            "scoring_system": "epss",
                            "scoring_elements": "0.39801",
                            "published_at": "2026-04-12T12:55:00Z"
                        },
                        {
                            "value": "0.00181",
                            "scoring_system": "epss",
                            "scoring_elements": "0.39815",
                            "published_at": "2026-04-02T12:55:00Z"
                        },
                        {
                            "value": "0.00181",
                            "scoring_system": "epss",
                            "scoring_elements": "0.39838",
                            "published_at": "2026-04-04T12:55:00Z"
                        },
                        {
                            "value": "0.00181",
                            "scoring_system": "epss",
                            "scoring_elements": "0.39759",
                            "published_at": "2026-04-07T12:55:00Z"
                        },
                        {
                            "value": "0.00181",
                            "scoring_system": "epss",
                            "scoring_elements": "0.39814",
                            "published_at": "2026-04-08T12:55:00Z"
                        },
                        {
                            "value": "0.00181",
                            "scoring_system": "epss",
                            "scoring_elements": "0.39828",
                            "published_at": "2026-04-09T12:55:00Z"
                        },
                        {
                            "value": "0.00181",
                            "scoring_system": "epss",
                            "scoring_elements": "0.39837",
                            "published_at": "2026-04-11T12:55:00Z"
                        }
                    ],
                    "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-3420"
                },
                {
                    "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3420",
                    "reference_id": "",
                    "reference_type": "",
                    "scores": [],
                    "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3420"
                },
                {
                    "reference_url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=984446",
                    "reference_id": "984446",
                    "reference_type": "",
                    "scores": [],
                    "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=984446"
                }
            ],
            "fixed_packages": [
                {
                    "url": "http://public2.vulnerablecode.io/api/packages/991734?format=api",
                    "purl": "pkg:apk/alpine/newlib@4.1.0-r0?arch=aarch64&distroversion=v3.17&reponame=community",
                    "is_vulnerable": false,
                    "affected_by_vulnerabilities": [],
                    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/newlib@4.1.0-r0%3Farch=aarch64&distroversion=v3.17&reponame=community"
                }
            ],
            "aliases": [
                "CVE-2021-3420"
            ],
            "risk_score": null,
            "exploitability": "0.5",
            "weighted_severity": "0.0",
            "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-pw8g-an3z-jydv"
        }
    ],
    "risk_score": null,
    "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/newlib@4.1.0-r0%3Farch=aarch64&distroversion=v3.17&reponame=community"
}