Lookup for vulnerabilities affecting packages.

GET /api/vulnerabilities/97049?format=api
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{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/97049?format=api",
    "vulnerability_id": "VCID-nj3z-4ya4-bqf7",
    "summary": "calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Prior to version 9.4.0, the calibre Content Server's brute-force protection mechanism uses a ban key derived from both `remote_addr` and the `X-Forwarded-For` header. Since the `X-Forwarded-For` header is read directly from the HTTP request without any validation or trusted-proxy configuration, an attacker can bypass IP-based bans by simply changing or adding this header, rendering the brute-force protection completely ineffective. This is particularly dangerous for calibre servers exposed to the internet, where brute-force protection is the primary defense against credential stuffing and password guessing attacks. Version 9.4.0 contains a fix for the issue.",
    "aliases": [
        {
            "alias": "CVE-2026-27824"
        }
    ],
    "fixed_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/582437?format=api",
            "purl": "pkg:deb/debian/calibre@8.16.2%2Bds%2B~0.10.5-3~bpo13%2B1",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
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        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/921612?format=api",
            "purl": "pkg:deb/debian/calibre@9.4.0%2Bds%2B~0.10.5-1?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
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        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/582195?format=api",
            "purl": "pkg:deb/debian/calibre@9.6.0%2Bds%2B~0.10.5-5?distro=trixie",
            "is_vulnerable": false,
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        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/1041946?format=api",
            "purl": "pkg:deb/debian/calibre@9.6.0%2Bds%2B~0.10.5-6?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
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        {
            "url": "http://public2.vulnerablecode.io/api/packages/1062443?format=api",
            "purl": "pkg:deb/debian/calibre@9.7.0%2Bds%2B~0.10.5-2?distro=trixie",
            "is_vulnerable": false,
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            "url": "http://public2.vulnerablecode.io/api/packages/582193?format=api",
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    ],
    "references": [
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2026-27824",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.0002",
                    "scoring_system": "epss",
                    "scoring_elements": "0.05368",
                    "published_at": "2026-04-02T12:55:00Z"
                },
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                    "value": "0.0002",
                    "scoring_system": "epss",
                    "scoring_elements": "0.05398",
                    "published_at": "2026-04-04T12:55:00Z"
                },
                {
                    "value": "0.0002",
                    "scoring_system": "epss",
                    "scoring_elements": "0.05405",
                    "published_at": "2026-04-07T12:55:00Z"
                },
                {
                    "value": "0.0002",
                    "scoring_system": "epss",
                    "scoring_elements": "0.0544",
                    "published_at": "2026-04-08T12:55:00Z"
                },
                {
                    "value": "0.0002",
                    "scoring_system": "epss",
                    "scoring_elements": "0.05461",
                    "published_at": "2026-04-09T12:55:00Z"
                },
                {
                    "value": "0.00027",
                    "scoring_system": "epss",
                    "scoring_elements": "0.07707",
                    "published_at": "2026-04-12T12:55:00Z"
                },
                {
                    "value": "0.00027",
                    "scoring_system": "epss",
                    "scoring_elements": "0.07605",
                    "published_at": "2026-04-18T12:55:00Z"
                },
                {
                    "value": "0.00027",
                    "scoring_system": "epss",
                    "scoring_elements": "0.07722",
                    "published_at": "2026-04-11T12:55:00Z"
                },
                {
                    "value": "0.00027",
                    "scoring_system": "epss",
                    "scoring_elements": "0.07617",
                    "published_at": "2026-04-16T12:55:00Z"
                },
                {
                    "value": "0.00027",
                    "scoring_system": "epss",
                    "scoring_elements": "0.07692",
                    "published_at": "2026-04-13T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-27824"
        },
        {
            "reference_url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-27824",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-27824"
        },
        {
            "reference_url": "https://github.com/kovidgoyal/calibre/security/advisories/GHSA-vhxc-r7v8-2xrw",
            "reference_id": "GHSA-vhxc-r7v8-2xrw",
            "reference_type": "",
            "scores": [
                {
                    "value": "5.3",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
                },
                {
                    "value": "Track",
                    "scoring_system": "ssvc",
                    "scoring_elements": "SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-02T12:54:19Z/"
                }
            ],
            "url": "https://github.com/kovidgoyal/calibre/security/advisories/GHSA-vhxc-r7v8-2xrw"
        }
    ],
    "weaknesses": [
        {
            "cwe_id": 307,
            "name": "Improper Restriction of Excessive Authentication Attempts",
            "description": "The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it more susceptible to brute force attacks."
        },
        {
            "cwe_id": 346,
            "name": "Origin Validation Error",
            "description": "The product does not properly verify that the source of data or communication is valid."
        }
    ],
    "exploits": [],
    "severity_range_score": "5.3 - 5.3",
    "exploitability": "0.5",
    "weighted_severity": "4.8",
    "risk_score": 2.4,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-nj3z-4ya4-bqf7"
}