libp2p: Unvalidated PUT_VALUE records allow unbounded disk exhaustion on DHT server nodes_CVE-2026-45783

{
    "lastseen": "",
    "description": "libp2p is a JavaScript Implementation of libp2p networking stack. Prior to version 16.2.6, an unauthenticated remote peer can exhaust the disk storage of any @libp2p/kad-dht node running in server mode by sending an unbounded stream of PUT_VALUE messages whose keys bypass all content validation. No credentials, no prior relationship, and no protocol deviation beyond a crafted key are required. The victim node's datastore fills until the host disk is exhausted, making the node unavailable. This issue has been patched in version 16.2.6.",
    "published": "2026-06-10T21:09:40.499Z",
    "modified": "2026-06-10T21:09:40.499Z",
    "type": "cve",
    "title": "libp2p: Unvalidated PUT_VALUE records allow unbounded disk exhaustion on DHT server nodes",
    "source": "GitHub_M",
    "references": "https://github.com/libp2p/js-libp2p/security/advisories/GHSA-32mq-hpph-xfvr",
    "id": "CVE-2026-45783",
    "bulletinFamily": "",
    "cwe": [
        "CWE-20",
        "CWE-400"
    ],
    "cvelist": null,
    "sourceData": "libp2p js-libp2p < 16.2.6",
    "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": "",
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            "privilegesRequired": "",
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            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "js-libp2p",
    "version": "< 16.2.6",
    "vendor": "libp2p",
    "ai_description": "",
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    "ai_score": 0
}