# CVE-2026-34065

## Summary

- **CVE ID:** CVE-2026-34065
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** CWE-252, CWE-755
- **Published:** Apr 22, 2026
- **Last Modified:** Apr 22, 2026

## 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

- nimiq — nimiq-primitives (< 1.3.0)

## References

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

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.37%
- **EPSS Percentile:** 30.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._