nimiq-consensus panics via RequestMacroChain micro-block locator_CVE-2026-34069

5.3 / 10

MEDIUM

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

Description

nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. In versions 1.2.2 and below, an unauthenticated p2p peer can cause the RequestMacroChain message handler task to panic. Sending a RequestMacroChain message where the first locator hash on the victim’s main chain is a micro block hash (not a macro block hash) causes said panic. The RequestMacroChain::handle 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). This issue has been fixed in version 1.3.0.

Basic Information

ID CVE-2026-34069

Source GitHub_M

Published Apr 13, 2026 at 23:55

Affected Product

Vendor nimiq

Product core-rs-albatross

Version < 1.3.0

Affected Versions nimiq core-rs-albatross < 1.3.0

CWE Classification

CWE-617

References

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    "published": "2026-04-13T23:55:52.994Z",
    "modified": "2026-04-13T23:55:52.994Z",
    "type": "cve",
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