Mafintosh’s protocol-buffers-schema is vulnerable to prototype pollution_CVE-2026-5758

{
    "lastseen": "",
    "description": "JavaScript is vulnerable to prototype pollution in Mafintosh's protocol-buffers-schema Version 3.6.0, where an attacker may alter the application logic, bypass security checks, cause a DoS or achieve remote code execution.",
    "published": "2026-04-15T17:20:13.551Z",
    "modified": "2026-04-15T18:55:45.526Z",
    "type": "cve",
    "title": "Mafintosh's protocol-buffers-schema is vulnerable to prototype pollution",
    "source": "certcc",
    "references": "https://github.com/mafintosh/protocol-buffers-schema/pull/70\nhttps://morielharush.github.io/2026/04/12/cve-2026-5758-protocol-buffers-schema-prototype-pollution/",
    "id": "CVE-2026-5758",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Mafintosh Protocol-buffers-schema parser 3.6.0",
    "sourceHref": "",
    "cvss": {
        "score": 6.5,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
        "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": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Protocol-buffers-schema parser",
    "version": "3.6.0",
    "vendor": "Mafintosh",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}