CVE-2026-44505
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk11th percentile - higher than 11% of all known CVEs
Summary
In versions prior to 1.4.0, the network-libp2p library in Nimiq improperly handles DHT record verification errors, potentially leading to future queries hanging indefinitely.
Risk Assessment
Organizations may experience service availability issues as queries can hang indefinitely, affecting the operation of applications based on Nimiq.
Recommendation
It is recommended to upgrade to version 1.4.0 or later to eliminate this vulnerability and ensure proper handling of DHT queries.
Original NVD description (English source)
Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. network-libp2p handles kad get-record query progress in handle_dht_get (network-libp2p/src/swarm.rs). Prior to version 1.4.0, when a peer returns a FoundRecord, the code verifies the record via dht_verifier.verify(&record.record). On verifier error, handle_dht_get logs and returns early without completing the oneshot used by Network::dht_get, and without cleaning up per-query bookkeeping. Later query progress can hit the "DHT inconsistent state" path and also return without cleanup. Because Network::dht_get awaits the oneshot without a timeout, the caller future can hang indefinitely. This issue has been patched in version 1.4.0.