---
title: "CVE-2026-54754: Klever: Marketplace settlement mints KLV when referral % + royalty % exceed the bid (negative seller share silently skipped)"
url: https://erroneo.us/security/cve/CVE-2026-54754/
description: "CVE-2026-54754 (github.com/klever-io/klever-go (Go)): Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.19, marketplace…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-08-28
date_modified: 2026-08-31
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-54754"
kev: false
cvss: 9.6
epss: 0.00432
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-54754: Klever: Marketplace settlement mints KLV when referral % + royalty % exceed the bid (negative seller share silently skipped)

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.4% , percentile 36: FIRST’s model estimates a 0.4% chance of exploitation activity in the next 30 days, higher than 36% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.
- Only applies if your dependency tree includes github.com/klever-io/klever-go (Go) < 1.7.19, fixed in 1.7.19 . Check your lockfile, including transitive dependencies.

## What it is

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.

## Affected packages

- Go `github.com/klever-io/klever-go` < 1.7.19 → fixed: 1.7.19

## Affected products (CVE record)

- klever-io klever-go: < 1.7.19

## Severity

- GitHub_M CVSS 3.1: 9.6 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H`
- GitHub CVSS 3.1: 9.6 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable no , technical impact partial .
- FIRST EPSS (model of 2026-10-21): 0.43% probability of exploitation activity in the next 30 days; percentile 36.

## Sources

- [GitHub Advisory GHSA-p7gw-2pcp-5pf8](https://github.com/advisories/GHSA-p7gw-2pcp-5pf8)
- [CVE.org record CVE-2026-54754](https://www.cve.org/CVERecord?id=CVE-2026-54754)
- [NVD entry CVE-2026-54754](https://nvd.nist.gov/vuln/detail/CVE-2026-54754)
- [github.com](https://github.com/klever-io/klever-go/security/advisories/GHSA-p7gw-2pcp-5pf8)
- [github.com](https://github.com/klever-io/klever-go/commit/8bcc600b0ac88070740c63c7ce1c8a968dd85251)
- [github.com](https://github.com/klever-io/klever-go/releases/tag/v1.7.19)

---
Source page: https://erroneo.us/security/cve/CVE-2026-54754/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt