---
id: CVE-2026-54754
title: Klever-Go is the Go implementation of the Klever blockchain protocol
summary: >-
  Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to
  1.7.19, marketplace settlement in core/kapp/market/market.go reads
  MarketOrderData.ReferralPercentage from the listing while reading
  asset.Royalties.MarketPer…
severity: critical
cvss: 9.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H'
cwe:
  - CWE-191
  - CWE-367
  - CWE-682
vendor: klever-io
product: github.com/klever-io/klever-go
affected:
  - github.com/klever-io/klever-go < 1.7.19
patched:
  - github.com/klever-io/klever-go 1.7.19
published: '2026-08-28'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:09:13.080'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54754'
references:
  - url: >-
      https://github.com/klever-io/klever-go/commit/8bcc600b0ac88070740c63c7ce1c8a968dd85251
    label: security-advisories@github.com
  - url: 'https://github.com/klever-io/klever-go/releases/tag/v1.7.19'
    label: security-advisories@github.com
  - url: >-
      https://github.com/klever-io/klever-go/security/advisories/GHSA-p7gw-2pcp-5pf8
    label: security-advisories@github.com
  - url: >-
      https://github.com/klever-io/klever-go/security/advisories/GHSA-p7gw-2pcp-5pf8
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/advisories/GHSA-p7gw-2pcp-5pf8'
tags:
  - nvd
  - ghsa
  - go
epss: 0.00432
epssPercentile: 0.34853
aliases:
  - GHSA-p7gw-2pcp-5pf8
ecosystem: go
ingestedAt: '2026-08-28T17:22:57.189Z'
---

## Overview

Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.19, marketplace settlement in core/kapp/market/market.go reads MarketOrderData.ReferralPercentage from the listing while reading asset.Royalties.MarketPercentage live at purchase time. An asset owner can create a valid listing and then use AssetTrigger UpdateRoyalties to make the combined referral and royalty percentages exceed the bid. executeBuyMarket pays referral and royalty amounts unconditionally while computeMarketOwnerAmount silently skips a nonpositive seller remainder, allowing MarketBuy, BuyItNow, or auction Claim settlement to credit more KLV or sale currency than the buyer paid. This can create unbacked currency and corrupt token supply integrity. This issue is fixed in version 1.7.19.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-54754)

Affected packages:

- `github.com/klever-io/klever-go < 1.7.19`

Patched in:

- `github.com/klever-io/klever-go 1.7.19`

Source: https://github.com/advisories/GHSA-p7gw-2pcp-5pf8