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CVE-2026-34065— nimiq-primitives: Node crash due to missing interlink validation in election macro block proposals

Quick assessment

Affected
nimiq nimiq-primitives
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 1.3.0之前版本存在安全漏洞，该漏洞源于nimiq-primitives中不受信任的p2p对等方可以通过宣布其validators集合包含无效压缩BLS投票密钥的选举宏块，导致节点panic。哈希选举宏头会哈希validators并到达Validators::voting_keys，后者调用validator.voting_key.uncompress().unwrap()并在无效字节上触发panic。

CVSS 7.5 · High EPSS 0.62% · P48

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2026-34065

Vulnerability Information
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Vulnerability Title
nimiq-primitives: Node crash due to missing interlink validation in election macro block proposals
Source: CVE Program / CVE List V5
Vulnerability Description
nimiq-primitives contains primitives (e.g., block, account, transaction) to be used in Nimiq's Rust implementation. Prior to version 1.3.0, an untrusted p2p peer can cause a node to panic by announcing an election macro block whose `validators` set contains an invalid compressed BLS voting key. Hashing an election macro header hashes `validators` and reaches `Validators::voting_keys()`, which calls `validator.voting_key.uncompress().unwrap()` and panics on invalid bytes. The patch for this vulnerability is included as part of v1.3.0. No known workarounds are available.
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:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加检查的返回值
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 1.3.0之前版本存在安全漏洞，该漏洞源于nimiq-primitives中不受信任的p2p对等方可以通过宣布其validators集合包含无效压缩BLS投票密钥的选举宏块，导致节点panic。哈希选举宏头会哈希validators并到达Validators::voting_keys，后者调用validator.voting_key.uncompress().unwrap()并在无效字节上触发panic。
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 nimiq-primitives < 1.3.0 -

II. Public POCs for CVE-2026-34065

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III. Intelligence Information for CVE-2026-34065

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Patches & Fixes for CVE-2026-34065 (2)

Same Patch Batch · nimiq · 2026-04-22 · 8 CVEs total

CVE-2026-33471 9.6 CRITICAL nimiq-block has skip block quorum bypass via out-of-range BitSet indices & u16 truncation
CVE-2026-34063 7.5 HIGH network-libp2p: Peer can crash the node by opening discovery protocol substream twice
CVE-2026-34068 6.8 MEDIUM nimiq-transaction: UpdateValidator transactions allows voting key change without proof-of-
CVE-2026-34062 5.3 MEDIUM Nimiq has Allocation of Resources Without Limits or Throttling in its libp2p request/respo
CVE-2026-34064 5.3 MEDIUM nimiq-account: Vesting insufficient funds error can panic
CVE-2026-34066 5.3 MEDIUM nimiq-blockchain: Peer-triggerable panic during history sync
CVE-2026-34067 3.1 LOW nimiq-transaction vulnerable to panic via `HistoryTreeProof` length mismatch

IV. Related Vulnerabilities

Same vendor: nimiq
Same weakness: CWE-252

V. Comments for CVE-2026-34065

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