GitHub Advisoryadvisory · crates.io

GHSA-48m6-486p-9j8p nimiq-consensus panics via RequestMacroChain micro-block locator

MEDIUM Published 2026-04-13 Modified 2026-04-15 Official page ↗
Aliases
CVE-2026-34069
Ecosystem
crates.io
Packages
nimiq-consensus
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
CWE-617
Reviewed
2026-04-13

Affected packages

• crates.io nimiq-consensus: <= 1.2.2 (no fix yet)

Description

Impact An unauthenticated p2p peer can cause the `RequestMacroChain` message handler task to panic by sending a `RequestMacroChain` message where the first locator hash that is on the victim’s main chain is a micro block hash (not a macro block hash). In `RequestMacroChain::handle`, the handler selects the locator based only on "is on main chain", then calls `get_macro_blocks()` and panics via `.unwrap()` when the selected hash is not a macro block (`BlockchainError::BlockIsNotMacro`). Patches The patch for this vulnerability](https://github.com/nimiq/core-rs-albatross/pull/3660) is formally released as part of v1.3.0. Workarounds No known workarounds.

Related

Alias · CVE (1)

  • CVE-2026-34069 nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. vulnerability

Weakness · CWE (1)

  • CWE-617 Reachable Assertion weakness

References