Denial of service via malicious preflight requests in github.com/rs/cors_CVE-2025-47908

{
    "lastseen": "",
    "description": "Middleware causes a prohibitive amount of heap allocations when processing malicious preflight requests that include a Access-Control-Request-Headers (ACRH) header whose value contains many commas. This behavior can be abused by attackers to produce undue load on the middleware/server as an attempt to cause a denial of service.",
    "published": "2025-08-06T20:41:31.311Z",
    "modified": "2025-08-07T13:47:15.232Z",
    "type": "cve",
    "title": "Denial of service via malicious preflight requests in github.com/rs/cors",
    "source": "Go",
    "references": "https://github.com/rs/cors/pull/171\nhttps://github.com/rs/cors/issues/170\nhttps://pkg.go.dev/vuln/GO-2024-2883",
    "id": "CVE-2025-47908",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "github.com/rs/cors github.com/rs/cors 1.9.0",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
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            "privilegesRequired": "",
            "userInteraction": "",
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            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "github.com/rs/cors",
    "version": "1.9.0",
    "vendor": "github.com/rs/cors",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}