{"id":"CVE-2026-77384","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-77384","summary":"libp2p is a JavaScript implementation of the libp2p networking stack. Prior to version 4.2.9, the reservation refresh path in reservation-store.ts reuses the same retimeableSignal but…","details":"libp2p is a JavaScript implementation of the libp2p networking stack. Prior to version 4.2.9, the reservation refresh path in reservation-store.ts reuses the same retimeableSignal but unconditionally registers another abort listener on every refresh. As a result, a remote peer can repeatedly send valid RESERVE requests for the same reservation, causing unbounded listener and closure growth in @libp2p/circuit-relay-v2 relay servers and leading to denial of service. This issue is fixed in version 4.2.9.","published":"2026-08-24T22:17:19.650","modified":"2026-08-24T22:17:19.650","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":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/libp2p/js-libp2p/commit/4bb8fbe8d3f3590e4af51a1f5f7de56fffa5804d","label":"libp2p/js-libp2p@4bb8fbe"},"references":[{"type":"WEB","url":"https://github.com/libp2p/js-libp2p/commit/4bb8fbe8d3f3590e4af51a1f5f7de56fffa5804d"},{"type":"WEB","url":"https://github.com/libp2p/js-libp2p/releases/tag/circuit-relay-v2-v4.2.9"},{"type":"WEB","url":"https://github.com/libp2p/js-libp2p/security/advisories/GHSA-x787-gh7p-hmq7"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-24T22:17:19.650"}}