CVE-2026-54754
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.
Scoring
- Severity
- CRITICAL
- CVSS base score
- 9.6
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
- EPSS probability
- 0.30%
- CWE
- CWE-191, CWE-367, CWE-682
- Published
- 2026-08-28
- Last modified
- 2026-08-31
Affected products
- klever-io klever-go
Weakness type
Related vulnerabilities
- CVE-2026-81977 — Acrobat Reader | Integer Underflow (Wrap or Wraparound) (CWE-191)
- CVE-2026-66307 — Skype for Business and Lync Denial of Service Vulnerability
- CVE-2026-78453 — Microsoft Windows SCSI Class System File Information Disclosure Vulnerability
- CVE-2026-77488 — Microsoft SQL Server Information Disclosure Vulnerability
- CVE-2026-71352 — Windows Remote Access Connection Manager Remote Code Execution Vulnerability
- CVE-2026-69824 — Microsoft Standard XPS Remote Code Execution Vulnerability
- CVE-2026-69687 — Windows USB Audio Class driver (usbaudio.sys) Elevation of Privilege Vulnerability
- CVE-2026-69421 — Windows Kernel-Mode Driver Elevation of Privilege Vulnerability