Vulnerability Instance

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{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/353887?format=api",
    "vulnerability_id": "VCID-j6a3-452x-7khn",
    "summary": "Missing critical step in authentication in Apache HttpClient 5.6 allows an attacker to cause the client to accept SCRAM-SHA-256 authentication without proper mutual authentication verification. Users are recommended to upgrade to version 5.6.1, which fixes this issue.",
    "aliases": [
        {
            "alias": "CVE-2026-40542"
        }
    ],
    "fixed_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/925050?format=api",
            "purl": "pkg:deb/debian/httpcomponents-client@0?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/httpcomponents-client@0%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/925045?format=api",
            "purl": "pkg:deb/debian/httpcomponents-client@4.5.13-2?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/httpcomponents-client@4.5.13-2%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/925043?format=api",
            "purl": "pkg:deb/debian/httpcomponents-client@4.5.14-1?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/httpcomponents-client@4.5.14-1%3Fdistro=trixie"
        }
    ],
    "affected_packages": [],
    "references": [
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2026-40542",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.00073",
                    "scoring_system": "epss",
                    "scoring_elements": "0.21915",
                    "published_at": "2026-04-24T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-40542"
        },
        {
            "reference_url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "7.4",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"
                }
            ],
            "url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"
        },
        {
            "reference_url": "https://lists.apache.org/thread/tfmgv86xr0z1y096vs3z0y315t1v3o97",
            "reference_id": "tfmgv86xr0z1y096vs3z0y315t1v3o97",
            "reference_type": "",
            "scores": [
                {
                    "value": "7.3",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"
                },
                {
                    "value": "Track",
                    "scoring_system": "ssvc",
                    "scoring_elements": "SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-04-22T14:14:52Z/"
                }
            ],
            "url": "https://lists.apache.org/thread/tfmgv86xr0z1y096vs3z0y315t1v3o97"
        }
    ],
    "weaknesses": [
        {
            "cwe_id": 304,
            "name": "Missing Critical Step in Authentication",
            "description": "The product implements an authentication technique, but it skips a step that weakens the technique."
        }
    ],
    "exploits": [],
    "severity_range_score": "7.3 - 7.4",
    "exploitability": null,
    "weighted_severity": null,
    "risk_score": null,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-j6a3-452x-7khn"
}