CVE-2026-54754
CriticalCVSS 9.6Summary
Klever-Go before version 1.7.19 has a vulnerability in marketplace settlement where it reads MarketOrderData.ReferralPercentage from the listing while reading asset.Royalties.MarketPercentage live at purchase time. An asset owner can create a valid listing and then use AssetTrigger UpdateRoyalties to make the combined percentages exceed the bid. executeBuyMarket pays referral and royalty amounts unconditionally while computeMarketOwnerAmount silently skips a nonpositive seller remainder, allowing more currency to be credited than paid. This issue is fixed in version 1.7.19.
Risk Assessment
An attacker can create unbacked currency and compromise token supply integrity, potentially leading to financial losses and ecosystem destabilization.
Recommendation
Upgrade Klever-Go to version 1.7.19 and implement consistency checks for market transactions.
Original NVD description (English source)
Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.19, marketplace settlement in core/kapp/market/market.go reads MarketOrderData.ReferralPercentage from the listing while reading asset.Royalties.MarketPercentage live at purchase time. An asset owner can create a valid listing and then use AssetTrigger UpdateRoyalties to make the combined referral and royalty percentages exceed the bid. executeBuyMarket pays referral and royalty amounts unconditionally while computeMarketOwnerAmount silently skips a nonpositive seller remainder, allowing MarketBuy, BuyItNow, or auction Claim settlement to credit more KLV or sale currency than the buyer paid. This can create unbacked currency and corrupt token supply integrity. This issue is fixed in version 1.7.19.