CVEvulnerability

CVE-2026-40093

8.1 HIGH Published 2026-04-09 Modified 2026-10-26 Official page ↗
Status
Analyzed
Published
2026-04-09
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Weaknesses
CWE-1284

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.

Affected configurations

• nimiq nimiq proof-of-stake (< 1.3.0)

Related

Weakness · CWE (1)

  • CWE-1284 Improper Validation of Specified Quantity in Input weakness

References