CVE-2026-77384

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/libp2p/js-libp2p/commit/4bb8fbe8d3f3590e4af51a1f5f7de56fffa5804d
https://github.com/libp2p/js-libp2p/releases/tag/circuit-relay-v2-v4.2.9
https://github.com/libp2p/js-libp2p/security/advisories/GHSA-x787-gh7p-hmq7
https://github.com/libp2p/js-libp2p/security/advisories/GHSA-x787-gh7p-hmq7

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-24 22:17

Updated : 2026-09-09 21:07

NVD link : CVE-2026-77384

Mitre link : CVE-2026-77384

CVE.ORG link : CVE-2026-77384

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-772

Missing Release of Resource after Effective Lifetime

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