Vulnerability Instance

HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/101439?format=api",
    "vulnerability_id": "VCID-6nqw-htvj-gyff",
    "summary": "An issue was discovered in Squid 5.x before 5.0.3. Due to an Incorrect Synchronization, a Denial of Service can occur when processing objects in an SMP cache because of an Ipc::Mem::PageStack::pop ABA problem during access to the memory page/slot management list.",
    "aliases": [
        {
            "alias": "CVE-2020-14059"
        }
    ],
    "fixed_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/129559?format=api",
            "purl": "pkg:deb/debian/squid@0?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/squid@0%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/129554?format=api",
            "purl": "pkg:deb/debian/squid@4.13-10%2Bdeb11u3?distro=trixie",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-5tpw-u7cg-hqd7"
                },
                {
                    "vulnerability": "VCID-7sua-wuyu-cqby"
                },
                {
                    "vulnerability": "VCID-pshb-b8z8-gqhm"
                },
                {
                    "vulnerability": "VCID-qyjc-znbd-dub6"
                },
                {
                    "vulnerability": "VCID-rv56-tjvg-bbbc"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/squid@4.13-10%252Bdeb11u3%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/129552?format=api",
            "purl": "pkg:deb/debian/squid@5.7-2%2Bdeb12u5?distro=trixie",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-5tpw-u7cg-hqd7"
                },
                {
                    "vulnerability": "VCID-7sua-wuyu-cqby"
                },
                {
                    "vulnerability": "VCID-pshb-b8z8-gqhm"
                },
                {
                    "vulnerability": "VCID-qyjc-znbd-dub6"
                },
                {
                    "vulnerability": "VCID-rv56-tjvg-bbbc"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/squid@5.7-2%252Bdeb12u5%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/129556?format=api",
            "purl": "pkg:deb/debian/squid@6.13-2%2Bdeb13u1?distro=trixie",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-5tpw-u7cg-hqd7"
                },
                {
                    "vulnerability": "VCID-pshb-b8z8-gqhm"
                },
                {
                    "vulnerability": "VCID-qyjc-znbd-dub6"
                },
                {
                    "vulnerability": "VCID-rv56-tjvg-bbbc"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/squid@6.13-2%252Bdeb13u1%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/129555?format=api",
            "purl": "pkg:deb/debian/squid@7.5-1?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/squid@7.5-1%3Fdistro=trixie"
        }
    ],
    "affected_packages": [],
    "references": [
        {
            "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-14059.json",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "6.3",
                    "scoring_system": "cvssv3",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H"
                }
            ],
            "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-14059.json"
        },
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2020-14059",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.03424",
                    "scoring_system": "epss",
                    "scoring_elements": "0.87676",
                    "published_at": "2026-06-04T12:55:00Z"
                },
                {
                    "value": "0.03424",
                    "scoring_system": "epss",
                    "scoring_elements": "0.87697",
                    "published_at": "2026-06-05T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2020-14059"
        },
        {
            "reference_url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "6.3",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H"
                }
            ],
            "url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"
        },
        {
            "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=1852558",
            "reference_id": "1852558",
            "reference_type": "",
            "scores": [],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1852558"
        }
    ],
    "weaknesses": [
        {
            "cwe_id": 662,
            "name": "Improper Synchronization",
            "description": "The product utilizes multiple threads or processes to allow temporary access to a shared resource that can only be exclusive to one process at a time, but it does not properly synchronize these actions, which might cause simultaneous accesses of this resource by multiple threads or processes."
        }
    ],
    "exploits": [],
    "severity_range_score": "6.3 - 6.3",
    "exploitability": null,
    "weighted_severity": null,
    "risk_score": null,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-6nqw-htvj-gyff"
}