CVE-2026-34065

HIGH 7.5

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

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-252 CWE-755
Vendor	nimiq
Product	nimiq-primitives
Published	Apr 22, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

nimiq / nimiq-primitives

< 1.3.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-7c4j-2m43-2mgh github.com: https://github.com/nimiq/core-rs-albatross/pull/3662 github.com: https://github.com/nimiq/core-rs-albatross/commit/e10eaebcd7774e5da6d0ff5e88ed13503474f0ff github.com: https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0