GET

Vulnerability Instance

Lookup for vulnerabilities affecting packages.

GET /api/vulnerabilities/3628?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/3628?format=api",
    "vulnerability_id": "VCID-292q-gt7d-57h4",
    "summary": "A serious problem exists when a client sends a large number of headers with the same header name. Apache uses up memory faster than the amount of memory required to simply store the received data itself. That is, memory use increases faster and faster as more headers are received, rather than increasing at a constant rate. This makes a denial of service attack based on this method more effective than methods which cause Apache to use memory at a constant rate, since the attacker has to send less data.",
    "aliases": [
        {
            "alias": "CVE-1999-1199"
        }
    ],
    "fixed_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/444?format=api",
            "purl": "pkg:apache/httpd@1.3.2",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-123w-f3zc-37d9"
                },
                {
                    "vulnerability": "VCID-3m9y-maes-5ycp"
                },
                {
                    "vulnerability": "VCID-a86d-f4nd-eqhh"
                },
                {
                    "vulnerability": "VCID-bu8e-hpcy-jqda"
                },
                {
                    "vulnerability": "VCID-d5w4-vnbd-afdj"
                },
                {
                    "vulnerability": "VCID-dqkp-f1my-dbg9"
                },
                {
                    "vulnerability": "VCID-e2sp-bna5-mqb6"
                },
                {
                    "vulnerability": "VCID-j3mb-97k1-uuh9"
                },
                {
                    "vulnerability": "VCID-kcwg-hswv-2uf7"
                },
                {
                    "vulnerability": "VCID-kgpj-aexq-7kah"
                },
                {
                    "vulnerability": "VCID-nkgw-gs9g-ckft"
                },
                {
                    "vulnerability": "VCID-prd8-51a5-pygj"
                },
                {
                    "vulnerability": "VCID-sgfs-58ym-fygd"
                },
                {
                    "vulnerability": "VCID-sn3y-mpbk-hqe8"
                },
                {
                    "vulnerability": "VCID-srxw-jjvr-p3d5"
                },
                {
                    "vulnerability": "VCID-ug4a-zxkg-cbew"
                },
                {
                    "vulnerability": "VCID-vj4e-mzff-9qfw"
                },
                {
                    "vulnerability": "VCID-yjqs-kszf-yka1"
                },
                {
                    "vulnerability": "VCID-zn9e-rcpj-yuax"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apache/httpd@1.3.2"
        }
    ],
    "affected_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/442?format=api",
            "purl": "pkg:apache/httpd@1.3.0",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-292q-gt7d-57h4"
                },
                {
                    "vulnerability": "VCID-3m9y-maes-5ycp"
                },
                {
                    "vulnerability": "VCID-a86d-f4nd-eqhh"
                },
                {
                    "vulnerability": "VCID-bu8e-hpcy-jqda"
                },
                {
                    "vulnerability": "VCID-d5w4-vnbd-afdj"
                },
                {
                    "vulnerability": "VCID-dqkp-f1my-dbg9"
                },
                {
                    "vulnerability": "VCID-e2sp-bna5-mqb6"
                },
                {
                    "vulnerability": "VCID-kcwg-hswv-2uf7"
                },
                {
                    "vulnerability": "VCID-nkgw-gs9g-ckft"
                },
                {
                    "vulnerability": "VCID-sgfs-58ym-fygd"
                },
                {
                    "vulnerability": "VCID-sn3y-mpbk-hqe8"
                },
                {
                    "vulnerability": "VCID-srxw-jjvr-p3d5"
                },
                {
                    "vulnerability": "VCID-ug4a-zxkg-cbew"
                },
                {
                    "vulnerability": "VCID-vj4e-mzff-9qfw"
                },
                {
                    "vulnerability": "VCID-yjqs-kszf-yka1"
                },
                {
                    "vulnerability": "VCID-zn9e-rcpj-yuax"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apache/httpd@1.3.0"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/443?format=api",
            "purl": "pkg:apache/httpd@1.3.1",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-292q-gt7d-57h4"
                },
                {
                    "vulnerability": "VCID-3m9y-maes-5ycp"
                },
                {
                    "vulnerability": "VCID-a86d-f4nd-eqhh"
                },
                {
                    "vulnerability": "VCID-bu8e-hpcy-jqda"
                },
                {
                    "vulnerability": "VCID-d5w4-vnbd-afdj"
                },
                {
                    "vulnerability": "VCID-dqkp-f1my-dbg9"
                },
                {
                    "vulnerability": "VCID-e2sp-bna5-mqb6"
                },
                {
                    "vulnerability": "VCID-kcwg-hswv-2uf7"
                },
                {
                    "vulnerability": "VCID-nkgw-gs9g-ckft"
                },
                {
                    "vulnerability": "VCID-sgfs-58ym-fygd"
                },
                {
                    "vulnerability": "VCID-sn3y-mpbk-hqe8"
                },
                {
                    "vulnerability": "VCID-srxw-jjvr-p3d5"
                },
                {
                    "vulnerability": "VCID-ug4a-zxkg-cbew"
                },
                {
                    "vulnerability": "VCID-vj4e-mzff-9qfw"
                },
                {
                    "vulnerability": "VCID-yjqs-kszf-yka1"
                },
                {
                    "vulnerability": "VCID-zn9e-rcpj-yuax"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apache/httpd@1.3.1"
        }
    ],
    "references": [
        {
            "reference_url": "http://marc.info/?l=bugtraq&m=90252779826784&w=2",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "http://marc.info/?l=bugtraq&m=90252779826784&w=2"
        },
        {
            "reference_url": "http://marc.info/?l=bugtraq&m=90276683825862&w=2",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "http://marc.info/?l=bugtraq&m=90276683825862&w=2"
        },
        {
            "reference_url": "http://marc.info/?l=bugtraq&m=90280517007869&w=2",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "http://marc.info/?l=bugtraq&m=90280517007869&w=2"
        },
        {
            "reference_url": "http://marc.info/?l=bugtraq&m=90286768232093&w=2",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "http://marc.info/?l=bugtraq&m=90286768232093&w=2"
        },
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-1999-1199",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.05121",
                    "scoring_system": "epss",
                    "scoring_elements": "0.89867",
                    "published_at": "2026-04-16T12:55:00Z"
                },
                {
                    "value": "0.05121",
                    "scoring_system": "epss",
                    "scoring_elements": "0.89861",
                    "published_at": "2026-04-12T12:55:00Z"
                },
                {
                    "value": "0.05121",
                    "scoring_system": "epss",
                    "scoring_elements": "0.89854",
                    "published_at": "2026-04-13T12:55:00Z"
                },
                {
                    "value": "0.05121",
                    "scoring_system": "epss",
                    "scoring_elements": "0.89811",
                    "published_at": "2026-04-01T12:55:00Z"
                },
                {
                    "value": "0.05121",
                    "scoring_system": "epss",
                    "scoring_elements": "0.89815",
                    "published_at": "2026-04-02T12:55:00Z"
                },
                {
                    "value": "0.05121",
                    "scoring_system": "epss",
                    "scoring_elements": "0.89829",
                    "published_at": "2026-04-04T12:55:00Z"
                },
                {
                    "value": "0.05121",
                    "scoring_system": "epss",
                    "scoring_elements": "0.89833",
                    "published_at": "2026-04-07T12:55:00Z"
                },
                {
                    "value": "0.05121",
                    "scoring_system": "epss",
                    "scoring_elements": "0.8985",
                    "published_at": "2026-04-08T12:55:00Z"
                },
                {
                    "value": "0.05121",
                    "scoring_system": "epss",
                    "scoring_elements": "0.89856",
                    "published_at": "2026-04-09T12:55:00Z"
                },
                {
                    "value": "0.05121",
                    "scoring_system": "epss",
                    "scoring_elements": "0.89863",
                    "published_at": "2026-04-11T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-1999-1199"
        },
        {
            "reference_url": "https://lists.apache.org/thread.html/r5419c9ba0951ef73a655362403d12bb8d10fab38274deb3f005816f5%40%3Ccvs.httpd.apache.org%3E",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://lists.apache.org/thread.html/r5419c9ba0951ef73a655362403d12bb8d10fab38274deb3f005816f5%40%3Ccvs.httpd.apache.org%3E"
        },
        {
            "reference_url": "https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E"
        },
        {
            "reference_url": "https://lists.apache.org/thread.html/rf2f0f3611f937cf6cfb3b4fe4a67f69885855126110e1e3f2fb2728e%40%3Ccvs.httpd.apache.org%3E",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://lists.apache.org/thread.html/rf2f0f3611f937cf6cfb3b4fe4a67f69885855126110e1e3f2fb2728e%40%3Ccvs.httpd.apache.org%3E"
        },
        {
            "reference_url": "https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E"
        },
        {
            "reference_url": "http://www.redhat.com/support/errata/rh51-errata-general.html#apache",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "http://www.redhat.com/support/errata/rh51-errata-general.html#apache"
        },
        {
            "reference_url": "https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*",
            "reference_id": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*",
            "reference_type": "",
            "scores": [],
            "url": "https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*"
        },
        {
            "reference_url": "https://httpd.apache.org/security/json/CVE-1999-1199.json",
            "reference_id": "CVE-1999-1199",
            "reference_type": "",
            "scores": [
                {
                    "value": "important",
                    "scoring_system": "apache_httpd",
                    "scoring_elements": ""
                }
            ],
            "url": "https://httpd.apache.org/security/json/CVE-1999-1199.json"
        },
        {
            "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-1999-1199",
            "reference_id": "CVE-1999-1199",
            "reference_type": "",
            "scores": [
                {
                    "value": "10.0",
                    "scoring_system": "cvssv2",
                    "scoring_elements": "AV:N/AC:L/Au:N/C:C/I:C/A:C"
                }
            ],
            "url": "https://nvd.nist.gov/vuln/detail/CVE-1999-1199"
        }
    ],
    "weaknesses": [],
    "exploits": [],
    "severity_range_score": "7.0 - 10.0",
    "exploitability": "0.5",
    "weighted_severity": "9.0",
    "risk_score": 4.5,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-292q-gt7d-57h4"
}