Is CVE-2026-34062 actively exploited?

CVE-2026-34062 has no public evidence of in-the-wild exploitation as of 2026-04-24.

What is the CVSS score for CVE-2026-34062?

CVE-2026-34062 has a CVSS score of 5.3 (MEDIUM severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

How do I patch CVE-2026-34062?

Patch guidance is available from nimiq security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-34062.

Which products are affected by CVE-2026-34062?

1 product: nimiq nimiq proof-of-stake.

CVE-2026-34062 - remediation guidance & executive summary

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: low
Weaknesses: CWE-770

Metadata

Primary Vendor: NIMIQ
Published: 4/22/2026
Last Modified: 4/24/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-34062

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary