{"id":"CVE-2026-46679","aliases":["GHSA-4f8r-922h-2vgv"],"url":"https://o3.security/vulnerability/CVE-2026-46679","summary":"libp2p: Memory DoS via subscription flood of unique topics","details":"libp2p is a JavaScript Implementation of libp2p networking stack. Prior to version 15.0.23, three cooperating omissions in @libp2p/gossipsub allow an unauthenticated single peer to exhaust the Node.js heap of any gossipsub node with default options. This issue has been patched in version 15.0.23.","published":"2026-06-10T21:08:52.464Z","modified":"2026-08-07T11:31:13.809812115Z","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"},"epss":{"score":0.00278,"percentile":0.1993,"asOf":"2026-08-09"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@libp2p/gossipsub","fixedVersion":"15.0.23"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46679.json"},{"type":"ADVISORY","url":"https://github.com/libp2p/js-libp2p/security/advisories/GHSA-4f8r-922h-2vgv"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46679"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:31:13.809812115Z"}}