{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "16.2.6"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "94f875c3fd1269e21c13cd364ca56b35fc8c72bf"
            }
          ],
          "repo": "https://github.com/libp2p/js-libp2p",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-32mq-hpph-xfvr"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-20",
      "CWE-400"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45783.json"
  },
  "details": "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.",
  "id": "CVE-2026-45783",
  "modified": "2026-07-08T05:39:06.324981590Z",
  "published": "2026-06-10T21:09:40.499Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45783.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/libp2p/js-libp2p/security/advisories/GHSA-32mq-hpph-xfvr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45783"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "libp2p: Unvalidated PUT_VALUE records allow unbounded disk exhaustion on DHT server nodes"
}