GET

Vulnerability Instance

Lookup for vulnerabilities affecting packages.

GET /api/vulnerabilities/306164?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/306164?format=api",
    "vulnerability_id": "VCID-9rmq-pj9r-3khj",
    "summary": "FileZilla Client 3.63.1 contains a DLL hijacking vulnerability that allows attackers to execute malicious code by placing a crafted TextShaping.dll in the application directory. Attackers can generate a reverse shell payload using msfvenom and replace the missing DLL to achieve remote code execution when the application launches.",
    "aliases": [
        {
            "alias": "CVE-2023-53959"
        }
    ],
    "fixed_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/582979?format=api",
            "purl": "pkg:deb/debian/filezilla@0?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/filezilla@0%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/582182?format=api",
            "purl": "pkg:deb/debian/filezilla@3.52.2-3%2Bdeb11u1?distro=trixie",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-24cg-zw49-b3ab"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/filezilla@3.52.2-3%252Bdeb11u1%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/582183?format=api",
            "purl": "pkg:deb/debian/filezilla@3.63.0-1%2Bdeb12u3?distro=trixie",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-24cg-zw49-b3ab"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/filezilla@3.63.0-1%252Bdeb12u3%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/582185?format=api",
            "purl": "pkg:deb/debian/filezilla@3.68.1-1?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/filezilla@3.68.1-1%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/582186?format=api",
            "purl": "pkg:deb/debian/filezilla@3.69.6-2?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/filezilla@3.69.6-2%3Fdistro=trixie"
        }
    ],
    "affected_packages": [],
    "references": [
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2023-53959",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.00288",
                    "scoring_system": "epss",
                    "scoring_elements": "0.52247",
                    "published_at": "2026-04-11T12:55:00Z"
                },
                {
                    "value": "0.00288",
                    "scoring_system": "epss",
                    "scoring_elements": "0.52258",
                    "published_at": "2026-04-18T12:55:00Z"
                },
                {
                    "value": "0.00288",
                    "scoring_system": "epss",
                    "scoring_elements": "0.52254",
                    "published_at": "2026-04-16T12:55:00Z"
                },
                {
                    "value": "0.00288",
                    "scoring_system": "epss",
                    "scoring_elements": "0.52216",
                    "published_at": "2026-04-13T12:55:00Z"
                },
                {
                    "value": "0.00288",
                    "scoring_system": "epss",
                    "scoring_elements": "0.52231",
                    "published_at": "2026-04-12T12:55:00Z"
                },
                {
                    "value": "0.00294",
                    "scoring_system": "epss",
                    "scoring_elements": "0.52692",
                    "published_at": "2026-04-02T12:55:00Z"
                },
                {
                    "value": "0.00294",
                    "scoring_system": "epss",
                    "scoring_elements": "0.52719",
                    "published_at": "2026-04-04T12:55:00Z"
                },
                {
                    "value": "0.00294",
                    "scoring_system": "epss",
                    "scoring_elements": "0.52684",
                    "published_at": "2026-04-07T12:55:00Z"
                },
                {
                    "value": "0.00294",
                    "scoring_system": "epss",
                    "scoring_elements": "0.52734",
                    "published_at": "2026-04-08T12:55:00Z"
                },
                {
                    "value": "0.00294",
                    "scoring_system": "epss",
                    "scoring_elements": "0.52729",
                    "published_at": "2026-04-09T12:55:00Z"
                },
                {
                    "value": "0.00372",
                    "scoring_system": "epss",
                    "scoring_elements": "0.58958",
                    "published_at": "2026-04-24T12:55:00Z"
                },
                {
                    "value": "0.00372",
                    "scoring_system": "epss",
                    "scoring_elements": "0.58962",
                    "published_at": "2026-04-29T12:55:00Z"
                },
                {
                    "value": "0.00372",
                    "scoring_system": "epss",
                    "scoring_elements": "0.58922",
                    "published_at": "2026-05-05T12:55:00Z"
                },
                {
                    "value": "0.00372",
                    "scoring_system": "epss",
                    "scoring_elements": "0.5897",
                    "published_at": "2026-05-07T12:55:00Z"
                },
                {
                    "value": "0.00372",
                    "scoring_system": "epss",
                    "scoring_elements": "0.58975",
                    "published_at": "2026-04-26T12:55:00Z"
                },
                {
                    "value": "0.00372",
                    "scoring_system": "epss",
                    "scoring_elements": "0.58976",
                    "published_at": "2026-04-21T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2023-53959"
        },
        {
            "reference_url": "https://www.exploit-db.com/exploits/51267",
            "reference_id": "51267",
            "reference_type": "",
            "scores": [
                {
                    "value": "9.8",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "value": "8.5",
                    "scoring_system": "cvssv4",
                    "scoring_elements": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
                },
                {
                    "value": "Track",
                    "scoring_system": "ssvc",
                    "scoring_elements": "SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2025-12-19T21:28:39Z/"
                }
            ],
            "url": "https://www.exploit-db.com/exploits/51267"
        },
        {
            "reference_url": "https://www.vulncheck.com/advisories/filezilla-client-dll-hijacking-via-missing-textshapingdll",
            "reference_id": "filezilla-client-dll-hijacking-via-missing-textshapingdll",
            "reference_type": "",
            "scores": [
                {
                    "value": "9.8",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "value": "8.5",
                    "scoring_system": "cvssv4",
                    "scoring_elements": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
                },
                {
                    "value": "Track",
                    "scoring_system": "ssvc",
                    "scoring_elements": "SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2025-12-19T21:28:39Z/"
                }
            ],
            "url": "https://www.vulncheck.com/advisories/filezilla-client-dll-hijacking-via-missing-textshapingdll"
        },
        {
            "reference_url": "https://filezilla-project.org/",
            "reference_id": "filezilla-project.org",
            "reference_type": "",
            "scores": [
                {
                    "value": "9.8",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "value": "8.5",
                    "scoring_system": "cvssv4",
                    "scoring_elements": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
                },
                {
                    "value": "Track",
                    "scoring_system": "ssvc",
                    "scoring_elements": "SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2025-12-19T21:28:39Z/"
                }
            ],
            "url": "https://filezilla-project.org/"
        }
    ],
    "weaknesses": [
        {
            "cwe_id": 427,
            "name": "Uncontrolled Search Path Element",
            "description": "The product uses a fixed or controlled search path to find resources, but one or more locations in that path can be under the control of unintended actors."
        }
    ],
    "exploits": [],
    "severity_range_score": "8.5 - 9.8",
    "exploitability": null,
    "weighted_severity": null,
    "risk_score": null,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-9rmq-pj9r-3khj"
}