CVE-2026-54755 PUBLISHED

Klever-Go: Integer overflow in split-royalty validation enables unbounded minting of KLV (native token)

Assigner: GitHub_M
Reserved: 15.06.2026 Published: 28.08.2026 Updated: 28.08.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
CVSS Score: 9.6

Product Status

Vendor klever-io
Product klever-go
Versions
  • Version < 1.7.19 is affected

References

Problem Types

  • CWE-190: Integer Overflow or Wraparound CWE