GET

Vulnerability Instance

Lookup for vulnerabilities affecting packages.

GET /api/vulnerabilities/349256?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/349256?format=api",
    "vulnerability_id": "VCID-jg77-mm5c-gydu",
    "summary": "Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Directory interpolates the configured root path directly into a regular expression when deriving the displayed directory path. If root contains regex metacharacters such as +, *, or ., the prefix stripping can fail and the generated directory listing may expose the full filesystem path in the HTML output. This issue has been patched in versions 2.2.23, 3.1.21, and 3.2.6.",
    "aliases": [
        {
            "alias": "CVE-2026-34763"
        },
        {
            "alias": "GHSA-7mqq-6cf9-v2qp"
        }
    ],
    "fixed_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/1059939?format=api",
            "purl": "pkg:deb/debian/ruby-rack@2.2.22-0%2Bdeb12u1",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/ruby-rack@2.2.22-0%252Bdeb12u1"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/1059941?format=api",
            "purl": "pkg:deb/debian/ruby-rack@3.1.20-0%2Bdeb13u1",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/ruby-rack@3.1.20-0%252Bdeb13u1"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/1059652?format=api",
            "purl": "pkg:deb/debian/ruby-rack@3.2.6-2?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/ruby-rack@3.2.6-2%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/1059943?format=api",
            "purl": "pkg:deb/debian/ruby-rack@3.2.6-2",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/ruby-rack@3.2.6-2"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/994089?format=api",
            "purl": "pkg:gem/rack@2.2.23",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/rack@2.2.23"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/994090?format=api",
            "purl": "pkg:gem/rack@3.1.21",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/rack@3.1.21"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/994091?format=api",
            "purl": "pkg:gem/rack@3.2.6",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/rack@3.2.6"
        }
    ],
    "affected_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/938322?format=api",
            "purl": "pkg:deb/debian/ruby-rack@2.1.4-3%2Bdeb11u2?distro=trixie",
            "is_vulnerable": true,
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                {
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                },
                {
                    "vulnerability": "VCID-2p73-rc9t-rudb"
                },
                {
                    "vulnerability": "VCID-2qba-a6bp-ryak"
                },
                {
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                },
                {
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                },
                {
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                },
                {
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                },
                {
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                },
                {
                    "vulnerability": "VCID-metf-cghw-p3b5"
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                {
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                {
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        },
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                {
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                },
                {
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                {
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                {
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                {
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                {
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                {
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                {
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        },
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            "url": "http://public2.vulnerablecode.io/api/packages/1049206?format=api",
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                {
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                },
                {
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                },
                {
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                },
                {
                    "vulnerability": "VCID-j34j-bgfd-8fez"
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                {
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                {
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                },
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        },
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        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/938325?format=api",
            "purl": "pkg:deb/debian/ruby-rack@3.1.18-1~deb13u1?distro=trixie",
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            "purl": "pkg:deb/debian/ruby-rack@3.1.18-1~deb13u1",
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    ],
    "references": [
        {
            "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-34763.json",
            "reference_id": "",
            "reference_type": "",
            "scores": [
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    "weaknesses": [
        {
            "cwe_id": 625,
            "name": "Permissive Regular Expression",
            "description": "The product uses a regular expression that does not sufficiently restrict the set of allowed values."
        },
        {
            "cwe_id": 41,
            "name": "Improper Resolution of Path Equivalence",
            "description": "The product is vulnerable to file system contents disclosure through path equivalence. Path equivalence involves the use of special characters in file and directory names. The associated manipulations are intended to generate multiple names for the same object."
        }
    ],
    "exploits": [],
    "severity_range_score": "4.0 - 6.9",
    "exploitability": "0.5",
    "weighted_severity": "6.2",
    "risk_score": 3.1,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-jg77-mm5c-gydu"
}