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

CVSS 5.3 · Medium EPSS 0.04% · P11

Possible ATT&CK Techniques 1AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProductVersion RangeStatus
nimiqcore-rs-albatross< 1.4.0affected
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I. Basic Information for CVE-2026-44505

Vulnerability Information
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Vulnerability Title
Nimiq network-libp2p: Untrusted peer can wedge DHT
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
对异常条件的处理不恰当
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
nimiqcore-rs-albatross < 1.4.0 -

II. Public POCs for CVE-2026-44505

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III. Intelligence Information for CVE-2026-44505

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Patches & Fixes for CVE-2026-44505 (1)

Vendor Advisories for CVE-2026-44505 (1)

Vendor Pages for CVE-2026-44505 (1)

Same Patch Batch · nimiq · 2026-06-09 · 7 CVEs total

CVE-2026-465457.5 HIGHnimiq-primitives: Panic DoS in trie chunk processing via ROOT-keyed item
CVE-2026-465417.5 HIGHNimiq network-libp2p: DHT query poisoning via first-record verification failure
CVE-2026-465406.5 MEDIUMNimiq light-blockchain: Light blockchain rebranch issue
CVE-2026-465395.9 MEDIUMnimiq-primitives: BlockInclusionProof interlink issue when hops are empty
CVE-2026-465435.3 MEDIUMnimiq-blockchain: Genesis batch set request
CVE-2026-465424.3 MEDIUMnimiq-keys: Denial of service in Ed25519 multisig delinearization via invalid curve points

IV. Related Vulnerabilities

Same product: core-rs-albatross
Same vendor: nimiq
Same weakness: CWE-755

V. Comments for CVE-2026-44505

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