CVE-2026-40093— nimiq-blockchain is missing a wall-clock upper bound on block timestamps
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I. Basic Information for CVE-2026-40093
Vulnerability Information
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Vulnerability Title
nimiq-blockchain is missing a wall-clock upper bound on block timestamps
Source: NVD (National Vulnerability Database)
Vulnerability Description
nimiq-blockchain provides persistent block storage for Nimiq's Rust implementation. In 1.3.0 and earlier, block timestamp validation enforces that timestamp >= parent.timestamp for non-skip blocks and timestamp == parent.timestamp + MIN_PRODUCER_TIMEOUT for skip blocks, but there is no visible upper bound check against the wall clock. A malicious block-producing validator can set block timestamps arbitrarily far in the future. This directly affects reward calculations via Policy::supply_at() and batch_delay() in blockchain/src/reward.rs, inflating the monetary supply beyond the intended emission schedule.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1284
Source: NVD (National Vulnerability Database)
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 1.3.0及之前版本存在安全漏洞，该漏洞源于区块时间戳缺少上限检查，可能导致恶意验证者设置任意未来的时间戳，从而影响奖励计算。
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 | <= 1.3.0 | - |
II. Public POCs for CVE-2026-40093
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same product: core-rs-albatross
- CVE-2026-34069
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nimiq/core-rs-albatross: Panic in history index request hand - CVE-2026-33184
nimiq/core-rs-albatross: Discovery handshake limit could und - CVE-2026-34061
nimiq/core-rs-albatross: Macro block proposal interlink bug
Same vendor: nimiq
- CVE-2026-34068
nimiq-transaction: UpdateValidator transactions allows votin - CVE-2026-34067
nimiq-transaction vulnerable to panic via `HistoryTreeProof` - CVE-2026-34066
nimiq-blockchain: Peer-triggerable panic during history sync - CVE-2026-34065
nimiq-primitives: Node crash due to missing interlink valida - CVE-2026-34064
nimiq-account: Vesting insufficient funds error can panic
Same weakness: CWE-1284
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ONE 安全漏洞
V. Comments for CVE-2026-40093
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