CVE Catalog

CVE-2026-34062

MediumCVSS 5.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.30%

22th percentile - higher than 22% of all known CVEs

Summary

In nimiq-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 sets with_max_concurrent_streams(1000), the node exposes a much larger stalled-slot budget than the library default. The patch is released in v1.3.0.

Risk Assessment

A remote attacker could exhaust resources by keeping many substreams open, potentially leading to resource exhaustion and denial of service. No known workarounds are available.

Recommendation

Update nimiq-libp2p to version 1.3.0 or later, which contains the fix.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS