curl: Heap Buffer Overflow in Curl_memdup0() via CURLOPT_COPYPOSTFIELDS/CURLOPT_POSTFIELDSIZE Mismatch_H1:3292590

{
    "lastseen": "2025-08-09T13:36:41",
    "description": "Vulnerability description not provided",
    "published": "2025-08-09T02:32:38",
    "modified": "2025-08-09T13:00:47",
    "type": "hackerone",
    "title": "curl: Heap Buffer Overflow in Curl_memdup0() via CURLOPT_COPYPOSTFIELDS/CURLOPT_POSTFIELDSIZE Mismatch",
    "source": "",
    "references": "",
    "id": "H1:3292590",
    "bulletinFamily": "bugbounty",
    "cwe": null,
    "cvelist": [],
    "sourceData": "",
    "sourceHref": "",
    "cvss": {
        "score": 0,
        "severity": "NONE",
        "vector": "NONE",
        "version": "NONE"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "https://hackerone.com/reports/3292590",
    "category_name": "News",
    "post_link": "",
    "product": "",
    "version": "",
    "vendor": "",
    "ai_description": "A heap buffer overflow vulnerability in cURL's Curl_memdup0() function can occur due to a mismatch between CURLOPT_COPYPOSTFIELDS and CURLOPT_POSTFIELDSIZE. This could lead to memory corruption, potentially allowing arbitrary code execution or causing the application to crash. Users are advised to update to a patched version of cURL to mitigate this issue.",
    "ai_severity": "High",
    "ai_vendor": "cURL Project Team",
    "ai_product": "curl",
    "ai_version": "",
    "ai_score": 0
}