{"id":"EUVD-2026-21146","revision":"585ba5d77d484904b4203bae0fc46dd5","records":[{"revision":"585ba5d77d484904b4203bae0fc46dd5","observedAt":"2026-11-01T06:15:11.049+00:00","statement":{"source":"euvd","id":"EUVD-2026-21146","aliases":["CVE-2026-40093","GHSA-49xc-52mp-cc9j"],"title":"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_PRO…","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.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","score":8.1,"severity":null}],"references":["https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-49xc-52mp-cc9j"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-21146","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Apr 9, 2026, 8:29:46 PM","dateUpdated":"Apr 13, 2026, 3:38:14 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-21146","identifiers":["EUVD-2026-21146","CVE-2026-40093","GHSA-49xc-52mp-cc9j"]},"retained":false,"historicalAffected":[]}],"coverage":[]}