CVE-2026-55763

Klever-Go: Percentage-transfer royalty skips the source debit at exactly-100% splits

State
Published
Severity
8.7 High
Published
Aug 28, 2026
Updated
Aug 31, 2026
Reserved
Jun 17, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
4.08.7 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:NGitHub_M

Weaknesses

  • CWE-841 Improper Enforcement of Behavioral Workflow

Affected Products

ProductVersions
klever-goklever-io
  • < 1.7.19Affected

References

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