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

Quick assessment

Affected
nimiq core-rs-albatross
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nimiq是Nimiq开源的一个Albatross协议的Rust实现。 Nimiq network-libp2p 1.4.0之前版本存在安全漏洞，该漏洞源于处理kad get-record查询时，对记录验证错误未完成oneshot和清理书签，可能导致调用者future无限挂起。

CVSS 5.3 · Medium EPSS 0.51% · P41

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
nimiq core-rs-albatross < 1.4.0 affected
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对异常条件的处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Nimiq 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nimiq是Nimiq开源的一个Albatross协议的Rust实现。 Nimiq network-libp2p 1.4.0之前版本存在安全漏洞，该漏洞源于处理kad get-record查询时，对记录验证错误未完成oneshot和清理书签，可能导致调用者future无限挂起。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nimiq core-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-2026-46545 7.5 HIGH nimiq-primitives: Panic DoS in trie chunk processing via ROOT-keyed item
CVE-2026-46541 7.5 HIGH Nimiq network-libp2p: DHT query poisoning via first-record verification failure
CVE-2026-46540 6.5 MEDIUM Nimiq light-blockchain: Light blockchain rebranch issue
CVE-2026-46539 5.9 MEDIUM nimiq-primitives: BlockInclusionProof interlink issue when hops are empty
CVE-2026-46543 5.3 MEDIUM nimiq-blockchain: Genesis batch set request
CVE-2026-46542 4.3 MEDIUM nimiq-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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