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CVE-2026-46543— nimiq-blockchain: Genesis batch set request

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 1.5.0之前版本存在安全漏洞，该漏洞源于处理包含创世区块哈希的RequestBatchSet消息时，Policy::macro_block_before在到达创世区块时崩溃。

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 < 1.5.0 affected
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I. Basic Information for CVE-2026-46543

Vulnerability Information
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Vulnerability Title
nimiq-blockchain: Genesis batch set request
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. Prior to version 1.5.0, a remote peer can crash any full node by sending a RequestBatchSet message containing the genesis block's hash. The handler calls get_epoch_chunks which iterates backwards through macro blocks using Policy::macro_block_before. When it reaches the genesis block number, macro_block_before panics with "No macro blocks before genesis block". This issue has been patched in version 1.5.0.
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
可达断言
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 1.5.0之前版本存在安全漏洞，该漏洞源于处理包含创世区块哈希的RequestBatchSet消息时，Policy::macro_block_before在到达创世区块时崩溃。
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 < 1.5.0 -

II. Public POCs for CVE-2026-46543

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III. Intelligence Information for CVE-2026-46543

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Patches & Fixes for CVE-2026-46543 (1)

Vendor Advisories for CVE-2026-46543 (1)

Vendor Pages for CVE-2026-46543 (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-2026-44505 5.3 MEDIUM Nimiq network-libp2p: Untrusted peer can wedge DHT
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-617

V. Comments for CVE-2026-46543

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