Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.19, split-royalty fields decoded in core/kapp/builtInFunctions/utils.go can contain values greater than core.HundredPercent, and core/kapp/kda/create.go and core/kapp/kda/trigger.go sum those values in uint32 accumulators. Crafted values such as two 0x80000000 entries wrap the validation sum to zero and pass CheckValid100Params. Royalty payout paths in core/kapp/accounts/accounts.go, core/kapp/market/market.go, and core/kapp/ito/ito.go then credit each oversized split amount and silently discard a negative remainder, allowing ordinary asset transfers, marketplace purchases, or ITO purchases to create unbacked KLV or other assets. This issue is fixed in version 1.7.19.

CVE-2026-54755 affects Klever-Go, the Go implementation of the Klever blockchain protocol, in versions prior to 1.7.19. The vulnerability exists in the split-royalty field decoding logic where values exceeding core.HundredPercent are accepted without proper validation. Integer overflow in uint32 accumulators allows crafted values (e.g., two 0x80000000 entries) to wrap the validation sum to zero, bypassing the CheckValid100Params check. Affected royalty payout paths in accounts, market, and ITO modules then credit oversized split amounts and silently discard negative remainders. This allows attackers to create unbacked KLV or other blockchain assets through ordinary asset transfers, marketplace purchases, or ITO purchases. The vulnerability represents an arbitrary token minting risk with significant financial implications for the blockchain ecosystem. The issue has been patched in version 1.7.19.