Klever-IO Klever-Go up to 1.7.18 Royalty Transfer accounts.go processPercentageRoyaltiesTransfer infinite loop

Summaryinfo

A vulnerability labeled as problematic has been found in Klever-IO Klever-Go up to 1.7.18. The affected element is the function processPercentageRoyaltiesTransfer of the file core/kapp/accounts/accounts.go of the component Royalty Transfer. Executing a manipulation can lead to infinite loop. This vulnerability is tracked as CVE-2026-55763. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Klever-IO Klever-Go up to 1.7.18. It has been declared as problematic. This vulnerability affects the function processPercentageRoyaltiesTransfer of the file core/kapp/accounts/accounts.go of the component Royalty Transfer. The manipulation with an unknown input leads to a infinite loop vulnerability. The CWE definition for the vulnerability is CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. As an impact it is known to affect integrity. CVE summarizes:

Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.19, processPercentageRoyaltiesTransfer in core/kapp/accounts/accounts.go calls SubFromBalance after the split loop and after the royaltiesToPay <= 0 early return. computeSplitRoyalties rejects only when splitToPay > royaltiesToPay, so a valid PercentTransferPercentage = 10000 split consumes exactly 100 percent of the royalty pool, sets royaltiesToPay to zero, and returns before the source account is debited. The split recipient receives the full royaltyAmount while the sender pays nothing and the supply counter is not updated, allowing unbounded off-the-books inflation of the transferred KDA. A KDA owner must configure a TransferPercentage royalty with a 100 percent split, after which any holder's transfer of the asset triggers the mint; the sibling processFixedRoyaltiesTransfer path is not affected because it debits the source before distribution. This issue is fixed in version 1.7.19.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-55763 since 06/17/2026. The exploitation appears to be easy. The attack can be initiated remotely. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 1.7.19 eliminates this vulnerability.

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Productinfo

Vendor

• Klever-IO

Name

• Klever-Go

Version

• 1.7.0
• 1.7.1
• 1.7.2
• 1.7.3
• 1.7.4
• 1.7.5
• 1.7.6
• 1.7.7
• 1.7.8
• 1.7.9
• 1.7.10
• 1.7.11
• 1.7.12
• 1.7.13
• 1.7.14
• 1.7.15
• 1.7.16
• 1.7.17
• 1.7.18

Website

• Product: https://github.com/klever-io/klever-go/

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