CVE-2026-82406 Klever-Go: Zombie-order theft: `Buy` missing `IsClaimed` guard in native marketplace

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...