Firebird server hangs when using specific clumplet on batch creation_CVE-2026-28214

{
    "lastseen": "",
    "description": "Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the ClumpletReader::getClumpletSize() function can overflow the totalLength value when parsing a Wide type clumplet, causing an infinite loop. An authenticated user with INSERT privileges on any table can exploit this via a crafted Batch Parameter Block to cause a denial of service against the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.",
    "published": "2026-04-17T18:35:46.974Z",
    "modified": "2026-04-17T18:35:46.974Z",
    "type": "cve",
    "title": "Firebird server hangs when using specific clumplet on batch creation",
    "source": "GitHub_M",
    "references": "https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7cq5-994r-jhrf\nhttps://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14\nhttps://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7\nhttps://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4",
    "id": "CVE-2026-28214",
    "bulletinFamily": "",
    "cwe": [
        "CWE-190",
        "CWE-835"
    ],
    "cvelist": null,
    "sourceData": "FirebirdSQL firebird >= 3.0.0, < 3.0.14\nFirebirdSQL firebird >= 4.0.0, < 4.0.7\nFirebirdSQL firebird >= 5.0.0, < 5.0.4",
    "sourceHref": "",
    "cvss": {
        "score": 6,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L",
        "version": "4.0"
    },
    "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": "firebird",
    "version": ">= 3.0.0, < 3.0.14",
    "vendor": "FirebirdSQL",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}