{"id":"EUVD-2026-85573","revision":"a3cddfa37f16426ca8ed3c2a4dcd4f29","records":[{"revision":"a3cddfa37f16426ca8ed3c2a4dcd4f29","observedAt":"2026-10-28T09:45:22.274+00:00","statement":{"source":"euvd","id":"EUVD-2026-85573","aliases":["CVE-2026-82406","GHSA-26r5-4mm2-px5c"],"title":"Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, the native marketplace function core/kapp/market/market.go Buy does not check IsClaimed before accepting a bid. A seller can use the Claim seller-accept …","description":"Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, the native marketplace function core/kapp/market/market.go Buy does not check IsClaimed before accepting a bid. A seller can use the Claim seller-accept branch to settle a resting-bid auction while leaving the claimed order loadable with a future EndTime and stale CurrentBid and CurrentBidder values. A later bidder can submit a higher bid, be debited, and cause the previous bidder to receive a refund even though the NFT has already been delivered. Because Claim and CancelOrder reject the later bidder when IsClaimed is true, the later bidder cannot obtain the NFT or recover the funds. This issue is fixed in version 1.7.20.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","score":7.1,"severity":null}],"references":["https://github.com/klever-io/klever-go/security/advisories/GHSA-26r5-4mm2-px5c","https://github.com/klever-io/klever-go/pull/16","https://github.com/klever-io/klever-go/commit/063bb3ed98f9a84a4b1f7286680613a5fc3c91b2","https://github.com/klever-io/klever-go/releases/tag/v1.7.20"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-85573","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 23, 2026, 7:10:23 PM","dateUpdated":"Sep 24, 2026, 3:20:49 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-2026-85573","identifiers":["EUVD-2026-85573","CVE-2026-82406","GHSA-26r5-4mm2-px5c"]},"retained":false,"historicalAffected":[]}],"coverage":[]}