Vulnerability Instance

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{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/17748?format=api",
    "vulnerability_id": "VCID-5wd2-9wcr-ayg4",
    "summary": "Inefficient Regular Expression Complexity\nA Regular Expression Denial of Service (ReDoS) issue was discovered in the sanitize_html function of redcloth gem v4.0.0. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted payload.",
    "aliases": [
        {
            "alias": "CVE-2023-31606"
        },
        {
            "alias": "GHSA-qcm3-vfq5-wfr2"
        }
    ],
    "fixed_packages": [],
    "affected_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/64140?format=api",
            "purl": "pkg:gem/RedCloth@4.3.2",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-5wd2-9wcr-ayg4"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:gem/RedCloth@4.3.2"
        }
    ],
    "references": [
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2023-31606",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.00912",
                    "scoring_system": "epss",
                    "scoring_elements": "0.76198",
                    "published_at": "2026-05-30T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2023-31606"
        },
        {
            "reference_url": "https://github.com/jgarber/redcloth",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://github.com/jgarber/redcloth"
        },
        {
            "reference_url": "https://github.com/jgarber/redcloth/blob/v4.3.2/lib/redcloth/formatters/html.rb#L327",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://github.com/jgarber/redcloth/blob/v4.3.2/lib/redcloth/formatters/html.rb#L327"
        },
        {
            "reference_url": "https://github.com/jgarber/redcloth/issues/73",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://github.com/jgarber/redcloth/issues/73"
        },
        {
            "reference_url": "https://lists.debian.org/debian-lts-announce/2023/07/msg00002.html",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://lists.debian.org/debian-lts-announce/2023/07/msg00002.html"
        },
        {
            "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2023-31606",
            "reference_id": "CVE-2023-31606",
            "reference_type": "",
            "scores": [],
            "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-31606"
        },
        {
            "reference_url": "https://github.com/e23e/CVE-2023-31606#readme",
            "reference_id": "CVE-2023-31606#README",
            "reference_type": "",
            "scores": [],
            "url": "https://github.com/e23e/CVE-2023-31606#readme"
        },
        {
            "reference_url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/RedCloth/CVE-2023-31606.yml",
            "reference_id": "CVE-2023-31606.YML",
            "reference_type": "",
            "scores": [],
            "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/RedCloth/CVE-2023-31606.yml"
        },
        {
            "reference_url": "https://github.com/advisories/GHSA-qcm3-vfq5-wfr2",
            "reference_id": "GHSA-qcm3-vfq5-wfr2",
            "reference_type": "",
            "scores": [],
            "url": "https://github.com/advisories/GHSA-qcm3-vfq5-wfr2"
        }
    ],
    "weaknesses": [
        {
            "cwe_id": 1035,
            "name": "OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities",
            "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017."
        },
        {
            "cwe_id": 1333,
            "name": "Inefficient Regular Expression Complexity",
            "description": "The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles."
        },
        {
            "cwe_id": 937,
            "name": "OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities",
            "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2013."
        }
    ],
    "exploits": [],
    "severity_range_score": null,
    "exploitability": null,
    "weighted_severity": null,
    "risk_score": null,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-5wd2-9wcr-ayg4"
}