Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nimiq | Nimiq Proof-Of-Stake | < 1.3.0 |
Related Weaknesses (CWE)
References
- https://github.com/nimiq/core-rs-albatross/commit/c021a5337b808c73571b44999f9753Patch
- 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-q4PatchVendor Advisory
FAQ
What is CVE-2026-34062?
CVE-2026-34062 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 ca...
How severe is CVE-2026-34062?
CVE-2026-34062 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-34062?
Check the references section above for vendor advisories and patch information. Affected products include: Nimiq Nimiq Proof-Of-Stake.