🛡️ CVE-2026-34065 — nimiq-primitives

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-252 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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

Impact

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.

Patches

[The patch for this vulnerability](https://github.com/nimiq/core-rs-albatross/commit/e10eaebcd7774e5da6d0ff5e88ed13503474f0ff) is included as part of [v1.3.0](https://github.com/nimiq/core-rs-albatross/releases/tag/v1.3.0).

Workarounds

No known workarounds.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

CVE-2026-34065 is classified as CWE-252: Unchecked Return Value. A return value signalling failure is ignored, and execution continues as though the operation had succeeded.

Affected software

CVE-2026-34065 is recorded against 2 packages.

  • nimiq-primitives
  • nimiq-proof-of-stake (fixed in 1.3.0)

Timeline and source

Published on 22 April 2026 and last revised on 5 May 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Package)
github.com (Web)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-252
Public Exploit ✅ No
Source NVD
Published 2026-04-22
Updated 2026-08-12
Modified 2026-05-05

Affected Packages

Software From version Fixed in
nimiq-primitives — —
nimiq-proof-of-stake — 1.3.0

Similar Threats

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