CVE-2026-28402
nimiq/core-rs-albatross's nimiq-blockchain missing proposal body root verification
Description
nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.2.2, a malicious or compromised validator that is elected as proposer can publish a macro block proposal where `header.body_root` does not match the actual macro body hash. The proposal can pass proposal verification because the macro proposal verification path validates the header but does not validate the binding `body_root == hash(body)`; later code expects this binding and may panic on mismatch, crashing validators. Note that the impact is only for validator nodes. The patch for this vulnerability is formally released as part of v1.2.2. The patch adds the corresponding body root verification in the proposal checks. No known workarounds are available.
INFO
Published Date :
Feb. 27, 2026, 10:16 p.m.
Last Modified :
May 4, 2026, 2:25 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-28402
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Update Nimiq Core-RS-Albatross to version 1.2.2.
- Apply the patch for macro block proposal verification.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-28402.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-28402 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-28402
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-28402 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-28402 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
May. 04, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:nimiq:nimiq_proof-of-stake:*:*:*:*:*:rust:*:* versions up to (excluding) 1.2.2 Added Reference Type GitHub, Inc.: https://github.com/nimiq/core-rs-albatross/commit/6454c26d966858c5520f55739a30b94c17656c85 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/nimiq/core-rs-albatross/pull/3623 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/nimiq/core-rs-albatross/releases/tag/v1.2.2 Types: Release Notes Added Reference Type GitHub, Inc.: https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-7wh6-rmxx-ww47 Types: Third Party Advisory -
New CVE Received by [email protected]
Feb. 27, 2026
Action Type Old Value New Value Added Description nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.2.2, a malicious or compromised validator that is elected as proposer can publish a macro block proposal where `header.body_root` does not match the actual macro body hash. The proposal can pass proposal verification because the macro proposal verification path validates the header but does not validate the binding `body_root == hash(body)`; later code expects this binding and may panic on mismatch, crashing validators. Note that the impact is only for validator nodes. The patch for this vulnerability is formally released as part of v1.2.2. The patch adds the corresponding body root verification in the proposal checks. No known workarounds are available. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H Added CWE CWE-354 Added Reference https://github.com/nimiq/core-rs-albatross/commit/6454c26d966858c5520f55739a30b94c17656c85 Added Reference https://github.com/nimiq/core-rs-albatross/pull/3623 Added Reference https://github.com/nimiq/core-rs-albatross/releases/tag/v1.2.2 Added Reference https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-7wh6-rmxx-ww47