Home/CVE/nimiq-libp2p is a Nimiq network implementation based on libp2p. Prior to version 1.3.0, `MessageCodec::read_request` and
CVE

CVE-2026-34062

nimiq-libp2p is a Nimiq network implementation based on libp2p. Prior to version 1.3.0, `MessageCodec::read_request` and

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.

MEDIUM · CVSS 5.3 EPSS 0.00056
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-770Allocation of Resources Without Limits or Throttling
▤

Affected Products & Versions

1
nimiq proof-of-stake< 1.3.0
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD22 Apr 2026 · 08:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/nimiq/core-rs-albatross/commit/c021a5337b808c73571b44999f9753051bac7508Patch
https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0Release Notes
https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-gh7r-qh4p-q4frPatchVendor Advisory
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