Vulnerability Details CVE-2026-40093
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 20.2%
CVSS Severity
CVSS v3 Score 8.1
Products affected by CVE-2026-40093
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.1.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.10.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.11.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.11.1
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.11.2
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.11.3
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.11.4
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.11.5
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.12.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.12.1
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.13.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.13.1
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.14.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.15.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.16.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.16.1
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.17.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.18.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.19.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.2.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.2.1
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.2.2
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.20.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.20.1
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.20.2
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.20.3
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.20.4
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.20.5
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.21.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.21.1
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.22.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.22.1
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.22.2
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.22.3
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.23.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.24.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.24.1
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.24.2
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.24.3
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.24.4
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.3.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.3.1
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.3.2
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.3.3
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.4.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.4.1
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.5.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.5.1
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.5.2
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.5.3
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.5.4
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.6.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.7.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.8.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.8.1
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.8.2
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.8.3
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:0.9.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:1.0.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:1.0.1
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:1.0.2
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:1.0.3
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:1.0.4
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:1.0.5
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:1.0.6
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:1.0.7
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:1.0.8
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:1.0.9
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:1.1.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:1.1.1
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:1.2.0
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:1.2.1
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cpe:2.3:a:nimiq:nimiq_proof-of-stake:1.2.2