GET

Vulnerability Instance

Lookup for vulnerabilities affecting packages.

GET /api/vulnerabilities/997?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/997?format=api",
    "vulnerability_id": "VCID-cf18-cwtq-wbe7",
    "summary": "multiple issues",
    "aliases": [
        {
            "alias": "CVE-2021-21861"
        }
    ],
    "fixed_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/179291?format=api",
            "purl": "pkg:deb/debian/gpac@1.0.1%2Bdfsg1-4%2Bdeb11u1?distro=bullseye",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/gpac@1.0.1%252Bdfsg1-4%252Bdeb11u1%3Fdistro=bullseye"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/179274?format=api",
            "purl": "pkg:deb/debian/gpac@1.0.1%2Bdfsg1-4%2Bdeb11u3?distro=bullseye",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/gpac@1.0.1%252Bdfsg1-4%252Bdeb11u3%3Fdistro=bullseye"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/191887?format=api",
            "purl": "pkg:ebuild/media-video/gpac@2.2.0",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:ebuild/media-video/gpac@2.2.0"
        }
    ],
    "affected_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/602?format=api",
            "purl": "pkg:alpm/archlinux/gpac@1:1.0.1-1",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-1ev2-2zvz-ckht"
                },
                {
                    "vulnerability": "VCID-29e9-a6mf-v3hy"
                },
                {
                    "vulnerability": "VCID-2gu3-t4d5-bbg3"
                },
                {
                    "vulnerability": "VCID-3ty1-hy29-43aa"
                },
                {
                    "vulnerability": "VCID-3uef-du78-5ke6"
                },
                {
                    "vulnerability": "VCID-48jf-eang-ybcq"
                },
                {
                    "vulnerability": "VCID-4usz-z98a-f3cs"
                },
                {
                    "vulnerability": "VCID-51na-x94w-pbde"
                },
                {
                    "vulnerability": "VCID-56v8-rpn5-juen"
                },
                {
                    "vulnerability": "VCID-58ha-rsu6-dygk"
                },
                {
                    "vulnerability": "VCID-5h9g-6esb-hbaq"
                },
                {
                    "vulnerability": "VCID-5qnk-vjtr-sfdb"
                },
                {
                    "vulnerability": "VCID-5tgb-7a2d-nkap"
                },
                {
                    "vulnerability": "VCID-6c32-et8c-hyc7"
                },
                {
                    "vulnerability": "VCID-6g1e-8a9x-87cy"
                },
                {
                    "vulnerability": "VCID-6qp4-ty82-wqdk"
                },
                {
                    "vulnerability": "VCID-6sc7-25ck-3kfz"
                },
                {
                    "vulnerability": "VCID-6xfv-hy22-j7av"
                },
                {
                    "vulnerability": "VCID-74xa-4hn4-p3h3"
                },
                {
                    "vulnerability": "VCID-775m-7qjm-e3hr"
                },
                {
                    "vulnerability": "VCID-7cga-nj9e-ubef"
                },
                {
                    "vulnerability": "VCID-aej7-v5tk-7bbh"
                },
                {
                    "vulnerability": "VCID-aj16-c3h7-3bbr"
                },
                {
                    "vulnerability": "VCID-awkr-wwqj-p7b7"
                },
                {
                    "vulnerability": "VCID-bjmg-94z3-x7f5"
                },
                {
                    "vulnerability": "VCID-cf18-cwtq-wbe7"
                },
                {
                    "vulnerability": "VCID-cmkd-qhvx-v7bt"
                },
                {
                    "vulnerability": "VCID-e13k-zenk-puan"
                },
                {
                    "vulnerability": "VCID-enzx-kje1-5qe9"
                },
                {
                    "vulnerability": "VCID-eq87-x6ag-qygh"
                },
                {
                    "vulnerability": "VCID-etxx-e4b2-5yc7"
                },
                {
                    "vulnerability": "VCID-fbb6-1yht-6qdv"
                },
                {
                    "vulnerability": "VCID-fhuf-k6n3-2bc9"
                },
                {
                    "vulnerability": "VCID-hhre-ab5m-gugk"
                },
                {
                    "vulnerability": "VCID-hw8b-x1es-77a1"
                },
                {
                    "vulnerability": "VCID-jcmc-4ba8-h7g9"
                },
                {
                    "vulnerability": "VCID-jnfs-wvkh-bfba"
                },
                {
                    "vulnerability": "VCID-jse1-zksg-2qff"
                },
                {
                    "vulnerability": "VCID-kgnz-ztn4-tycf"
                },
                {
                    "vulnerability": "VCID-mbe6-44a3-p3c1"
                },
                {
                    "vulnerability": "VCID-mg8p-gqzg-mfhg"
                },
                {
                    "vulnerability": "VCID-mujq-cw6b-efbv"
                },
                {
                    "vulnerability": "VCID-n4fv-6nf5-23bv"
                },
                {
                    "vulnerability": "VCID-n9hf-wuy7-ykac"
                },
                {
                    "vulnerability": "VCID-ncsr-njt5-gqbs"
                },
                {
                    "vulnerability": "VCID-nczv-xrcv-53cx"
                },
                {
                    "vulnerability": "VCID-nd6m-ymex-vya6"
                },
                {
                    "vulnerability": "VCID-nguz-ccn6-2ug1"
                },
                {
                    "vulnerability": "VCID-nr37-fyms-5qcu"
                },
                {
                    "vulnerability": "VCID-ns7j-vv7h-q7a8"
                },
                {
                    "vulnerability": "VCID-pak8-met9-hfgj"
                },
                {
                    "vulnerability": "VCID-pnc1-ms5s-rbfu"
                },
                {
                    "vulnerability": "VCID-prpm-t4u8-5bev"
                },
                {
                    "vulnerability": "VCID-qfsc-zr5n-ffeq"
                },
                {
                    "vulnerability": "VCID-qqas-9531-4ufg"
                },
                {
                    "vulnerability": "VCID-qvnt-jmf7-3khc"
                },
                {
                    "vulnerability": "VCID-r48e-n82g-6yb3"
                },
                {
                    "vulnerability": "VCID-rf39-xeax-1qgy"
                },
                {
                    "vulnerability": "VCID-rh8t-uzk8-2kd4"
                },
                {
                    "vulnerability": "VCID-rks1-b9mf-hyh4"
                },
                {
                    "vulnerability": "VCID-sec9-gwak-xqgs"
                },
                {
                    "vulnerability": "VCID-sezz-kjjv-wbam"
                },
                {
                    "vulnerability": "VCID-sv4k-tk2b-2kb4"
                },
                {
                    "vulnerability": "VCID-w3wy-q87u-e3fq"
                },
                {
                    "vulnerability": "VCID-wcuf-33w3-1qfs"
                },
                {
                    "vulnerability": "VCID-xnkz-d5f9-1qbm"
                },
                {
                    "vulnerability": "VCID-yded-9vp8-ryg5"
                },
                {
                    "vulnerability": "VCID-yfdd-yq9x-jbam"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/gpac@1:1.0.1-1"
        }
    ],
    "references": [
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-21861",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.00418",
                    "scoring_system": "epss",
                    "scoring_elements": "0.62135",
                    "published_at": "2026-05-30T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-21861"
        },
        {
            "reference_url": "https://security.archlinux.org/AVG-1823",
            "reference_id": "AVG-1823",
            "reference_type": "",
            "scores": [
                {
                    "value": "Medium",
                    "scoring_system": "archlinux",
                    "scoring_elements": ""
                }
            ],
            "url": "https://security.archlinux.org/AVG-1823"
        },
        {
            "reference_url": "https://security.gentoo.org/glsa/202408-21",
            "reference_id": "GLSA-202408-21",
            "reference_type": "",
            "scores": [],
            "url": "https://security.gentoo.org/glsa/202408-21"
        }
    ],
    "weaknesses": [],
    "exploits": [],
    "severity_range_score": "4.0 - 6.9",
    "exploitability": "0.5",
    "weighted_severity": "6.2",
    "risk_score": 3.1,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-cf18-cwtq-wbe7"
}