Vulnerability · Published Apr 22, 2026 · Assigned by GitHub_M

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

High 7.5

In plain English

A high-severity security flaw in nimiq-primitives from nimiq. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.4%top 68.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
nimiq	nimiq-primitives	< 1.3.0

Weakness: CWE-252, CWE-755 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

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