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CVE-2026-28402— nimiq/core-rs-albatross's nimiq-blockchain missing proposal body root verification

Quick assessment

Affected
nimiq core-rs-albatross
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

core-rs-albatross是Nimiq开源的一个Albatross协议的Rust实现。 core-rs-albatross 1.2.2之前版本存在安全漏洞，该漏洞源于宏区块提案验证未检查header.body_root与实际宏体哈希的绑定，可能导致验证器节点崩溃。

CVSS 7.1 · High EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1499.002 · Service Exhaustion Flood
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I. Basic Information for CVE-2026-28402

Vulnerability Information
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Vulnerability Title
nimiq/core-rs-albatross's nimiq-blockchain missing proposal body root verification
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
完整性检查值验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
core-rs-albatross 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
core-rs-albatross是Nimiq开源的一个Albatross协议的Rust实现。 core-rs-albatross 1.2.2之前版本存在安全漏洞，该漏洞源于宏区块提案验证未检查header.body_root与实际宏体哈希的绑定，可能导致验证器节点崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nimiq core-rs-albatross < 1.2.2 -

II. Public POCs for CVE-2026-28402

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8427 chars
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III. Intelligence Information for CVE-2026-28402

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IV. Related Vulnerabilities

Same product: core-rs-albatross
Same vendor: nimiq
Same weakness: CWE-354

V. Comments for CVE-2026-28402

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