Use-After-Free and Double-Free in IntoIter::drop when element drop panics_CVE-2026-6654

{
    "lastseen": "",
    "description": "Double-Free / Use-After-Free (UAF) in the `IntoIter::drop` and `ThinVec::clear` functions in the thin_vec crate. A panic in `ptr::drop_in_place` skips setting the length to zero.",
    "published": "2026-04-20T10:05:52.339Z",
    "modified": "2026-04-20T13:14:37.846Z",
    "type": "cve",
    "title": "Use-After-Free and Double-Free in IntoIter::drop when element drop panics",
    "source": "mozilla",
    "references": "https://github.com/mozilla/thin-vec/security/advisories/GHSA-xphw-cqx3-667j",
    "id": "CVE-2026-6654",
    "bulletinFamily": "",
    "cwe": [
        "CWE-415",
        "CWE-416"
    ],
    "cvelist": null,
    "sourceData": "",
    "sourceHref": "",
    "cvss": {
        "score": 5.1,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
        "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": "thin-vec",
    "version": "0.2.16",
    "vendor": "Mozilla",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}