Vulnerability · Published Jun 9, 2026 · Assigned by GitHub_M

CVE-2026-44505Nimiq network-libp2p: Untrusted peer can wedge DHT

Medium 5.3

In plain English

A medium-severity security flaw in core-rs-albatross from nimiq. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.3%top 77.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
nimiq	core-rs-albatross	< 1.4.0

Weakness: CWE-755 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-g39c-jcgg-qwvr x_refsource_CONFIRM
https://github.com/nimiq/core-rs-albatross/pull/3716 x_refsource_MISC
https://github.com/nimiq/core-rs-albatross/releases/tag/v1.4.0 x_refsource_MISC