Vulnerability · Published Apr 22, 2026 · Assigned by GitHub_M
CVE-2026-34062Nimiq has Allocation of Resources Without Limits or Throttling in its libp2p request/response
Medium 5.3
In plain English
A medium-severity resource allocation without limits in network-libp2p from nimiq. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).
Official description
nimiq-libp2p is a Nimiq network implementation based on libp2p. Prior to version 1.3.0, `MessageCodec::read_request` and `read_response` call `read_to_end()` on inbound substreams, so a remote peer can send only a partial frame and keep the substream open. because `Behaviour::new` also sets `with_max_concurrent_streams(1000)`, the node exposes a much larger stalled-slot budget than the library default. The patch for this vulnerability is formally released as part of v1.3.0. No known workarounds are available.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| nimiq | network-libp2p | < 1.3.0 |
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L