GET

Vulnerability Instance

Lookup for vulnerabilities affecting packages.

GET /api/vulnerabilities/52496?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/52496?format=api",
    "vulnerability_id": "VCID-cg2v-phw4-ake2",
    "summary": "Missing Authentication for Critical Function in Apache NiFi\nIn Apache NiFi 1.0.0 to 1.11.4, the NiFi download token (one-time password) mechanism used a fixed cache size and did not authenticate a request to create a download token, only when attempting to use the token to access the content. An unauthenticated user could repeatedly request download tokens, preventing legitimate users from requesting download tokens.",
    "aliases": [
        {
            "alias": "CVE-2020-9487"
        },
        {
            "alias": "GHSA-3pp3-77j6-8ph6"
        }
    ],
    "fixed_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/215699?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.12.0",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.12.0"
        }
    ],
    "affected_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/24277?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi@1.0.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-1hne-dn7f-4yfy"
                },
                {
                    "vulnerability": "VCID-2dsr-hras-zudk"
                },
                {
                    "vulnerability": "VCID-2ema-4jrp-3kfr"
                },
                {
                    "vulnerability": "VCID-3eka-p4cs-f3dz"
                },
                {
                    "vulnerability": "VCID-3rp1-pc25-euhm"
                },
                {
                    "vulnerability": "VCID-4fnm-bxv8-vqhz"
                },
                {
                    "vulnerability": "VCID-6mt2-4tn4-5bcb"
                },
                {
                    "vulnerability": "VCID-bppj-knks-jybe"
                },
                {
                    "vulnerability": "VCID-bpqd-tx8f-kycf"
                },
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
                },
                {
                    "vulnerability": "VCID-gqjq-sbf1-x7ew"
                },
                {
                    "vulnerability": "VCID-hy35-v2p5-2ycq"
                },
                {
                    "vulnerability": "VCID-j263-1hyr-t7hn"
                },
                {
                    "vulnerability": "VCID-k1bm-1u7b-vybp"
                },
                {
                    "vulnerability": "VCID-r9su-47z6-x7cw"
                },
                {
                    "vulnerability": "VCID-rj21-6d19-gqbe"
                },
                {
                    "vulnerability": "VCID-rjau-hbsn-u3ah"
                },
                {
                    "vulnerability": "VCID-rn4r-36ab-sfey"
                },
                {
                    "vulnerability": "VCID-rv8f-q4a4-xqbk"
                },
                {
                    "vulnerability": "VCID-tnfn-2kzc-rugx"
                },
                {
                    "vulnerability": "VCID-w18h-3c8s-s3eq"
                },
                {
                    "vulnerability": "VCID-xv8d-3nef-dygg"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi@1.0.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/143152?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi@1.11.4",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-2ema-4jrp-3kfr"
                },
                {
                    "vulnerability": "VCID-3eka-p4cs-f3dz"
                },
                {
                    "vulnerability": "VCID-4uja-72yx-6qdc"
                },
                {
                    "vulnerability": "VCID-bppj-knks-jybe"
                },
                {
                    "vulnerability": "VCID-bpqd-tx8f-kycf"
                },
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
                },
                {
                    "vulnerability": "VCID-ec58-s3nd-7yaz"
                },
                {
                    "vulnerability": "VCID-g74u-zmqj-gyb7"
                },
                {
                    "vulnerability": "VCID-hy35-v2p5-2ycq"
                },
                {
                    "vulnerability": "VCID-rn4r-36ab-sfey"
                },
                {
                    "vulnerability": "VCID-rv8f-q4a4-xqbk"
                },
                {
                    "vulnerability": "VCID-xhjy-xmhq-abh7"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi@1.11.4"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/215688?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.0.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.0.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/215689?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.0.1",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.0.1"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/215690?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.1.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.1.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/215691?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.1.1",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.1.1"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/215692?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.1.2",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.1.2"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/215693?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.2.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.2.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/142209?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.3.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
                },
                {
                    "vulnerability": "VCID-mrb8-sr51-vkep"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.3.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/197614?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.4.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
                },
                {
                    "vulnerability": "VCID-mrb8-sr51-vkep"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.4.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/197615?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.5.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
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                {
                    "vulnerability": "VCID-mrb8-sr51-vkep"
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            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.5.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/197616?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.6.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
                },
                {
                    "vulnerability": "VCID-mrb8-sr51-vkep"
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            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.6.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/197617?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.7.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
                },
                {
                    "vulnerability": "VCID-mrb8-sr51-vkep"
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            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.7.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/197618?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.7.1",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
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                {
                    "vulnerability": "VCID-mrb8-sr51-vkep"
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            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.7.1"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/197619?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.8.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
                },
                {
                    "vulnerability": "VCID-mrb8-sr51-vkep"
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            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.8.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/197620?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.9.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
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                {
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            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.9.0"
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        {
            "url": "http://public2.vulnerablecode.io/api/packages/197621?format=api",
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            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
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                    "vulnerability": "VCID-mrb8-sr51-vkep"
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            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.9.1"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/197622?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.9.2",
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            "affected_by_vulnerabilities": [
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            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.9.2"
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        {
            "url": "http://public2.vulnerablecode.io/api/packages/78877?format=api",
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            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
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            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.10.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/215694?format=api",
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            "affected_by_vulnerabilities": [
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        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/215695?format=api",
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            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
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            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.11.1"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/215696?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.11.2",
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            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
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            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.11.2"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/215697?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.11.3",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
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            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.11.3"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/215698?format=api",
            "purl": "pkg:maven/org.apache.nifi/nifi-web-security@1.11.4",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-cg2v-phw4-ake2"
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            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:maven/org.apache.nifi/nifi-web-security@1.11.4"
        }
    ],
    "references": [
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2020-9487",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.00633",
                    "scoring_system": "epss",
                    "scoring_elements": "0.70535",
                    "published_at": "2026-05-14T12:55:00Z"
                },
                {
                    "value": "0.00633",
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                    "published_at": "2026-04-24T12:55:00Z"
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                {
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                    "scoring_elements": "0.70444",
                    "published_at": "2026-04-26T12:55:00Z"
                },
                {
                    "value": "0.00633",
                    "scoring_system": "epss",
                    "scoring_elements": "0.70443",
                    "published_at": "2026-04-29T12:55:00Z"
                },
                {
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                    "scoring_elements": "0.70417",
                    "published_at": "2026-05-05T12:55:00Z"
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                    "published_at": "2026-04-01T12:55:00Z"
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                {
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                {
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                    "scoring_elements": "0.70296",
                    "published_at": "2026-04-07T12:55:00Z"
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                {
                    "value": "0.00633",
                    "scoring_system": "epss",
                    "scoring_elements": "0.70341",
                    "published_at": "2026-04-08T12:55:00Z"
                },
                {
                    "value": "0.00633",
                    "scoring_system": "epss",
                    "scoring_elements": "0.70356",
                    "published_at": "2026-04-09T12:55:00Z"
                },
                {
                    "value": "0.00633",
                    "scoring_system": "epss",
                    "scoring_elements": "0.70379",
                    "published_at": "2026-04-11T12:55:00Z"
                },
                {
                    "value": "0.00633",
                    "scoring_system": "epss",
                    "scoring_elements": "0.70364",
                    "published_at": "2026-04-12T12:55:00Z"
                },
                {
                    "value": "0.00633",
                    "scoring_system": "epss",
                    "scoring_elements": "0.70351",
                    "published_at": "2026-04-13T12:55:00Z"
                },
                {
                    "value": "0.00633",
                    "scoring_system": "epss",
                    "scoring_elements": "0.70394",
                    "published_at": "2026-04-16T12:55:00Z"
                },
                {
                    "value": "0.00633",
                    "scoring_system": "epss",
                    "scoring_elements": "0.70403",
                    "published_at": "2026-04-18T12:55:00Z"
                },
                {
                    "value": "0.00633",
                    "scoring_system": "epss",
                    "scoring_elements": "0.70384",
                    "published_at": "2026-04-21T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2020-9487"
        },
        {
            "reference_url": "https://github.com/apache/nifi/commit/01e42dfb3291c3a3549023edadafd2d8023f3042",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "7.5",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "value": "HIGH",
                    "scoring_system": "generic_textual",
                    "scoring_elements": ""
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            "url": "https://github.com/apache/nifi/commit/01e42dfb3291c3a3549023edadafd2d8023f3042"
        },
        {
            "reference_url": "https://github.com/apache/nifi/pull/4271",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
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        },
        {
            "reference_url": "https://nifi.apache.org/security#CVE-2020-9487",
            "reference_id": "",
            "reference_type": "",
            "scores": [
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                    "value": "7.5",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "value": "HIGH",
                    "scoring_system": "generic_textual",
                    "scoring_elements": ""
                }
            ],
            "url": "https://nifi.apache.org/security#CVE-2020-9487"
        },
        {
            "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2020-9487",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "7.5",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "value": "HIGH",
                    "scoring_system": "generic_textual",
                    "scoring_elements": ""
                }
            ],
            "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-9487"
        },
        {
            "reference_url": "https://github.com/advisories/GHSA-3pp3-77j6-8ph6",
            "reference_id": "GHSA-3pp3-77j6-8ph6",
            "reference_type": "",
            "scores": [
                {
                    "value": "HIGH",
                    "scoring_system": "cvssv3.1_qr",
                    "scoring_elements": ""
                }
            ],
            "url": "https://github.com/advisories/GHSA-3pp3-77j6-8ph6"
        }
    ],
    "weaknesses": [
        {
            "cwe_id": 306,
            "name": "Missing Authentication for Critical Function",
            "description": "The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources."
        },
        {
            "cwe_id": 1035,
            "name": "OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities",
            "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017."
        },
        {
            "cwe_id": 937,
            "name": "OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities",
            "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2013."
        }
    ],
    "exploits": [],
    "severity_range_score": "7.0 - 8.9",
    "exploitability": "0.5",
    "weighted_severity": "8.0",
    "risk_score": 4.0,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-cg2v-phw4-ake2"
}