CVE-2026-54755

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Source

https://cve.org/CVERecord?id=CVE-2026-54755

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54755.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-54755

Aliases

Published

2026-08-28T16:23:44.276Z

Modified

2026-09-02T19:55:46.899060346Z

Severity

9.6 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H CVSS Calculator

Summary

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

Details

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.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54755.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-190"
    ]
}

References

Affected packages

Git / github.com/klever-io/klever-go

Affected ranges

Type

GIT

Repo

https://github.com/klever-io/klever-go

Events

Introduced

Fixed

8bcc600b0ac88070740c63c7ce1c8a968dd85251

Database specific

Show details

{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.7.19"
        }
    ]
}

Affected versions

v1.*

v1.7.14

v1.7.15

v1.7.16

v1.7.17

v1.7.18

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54755.json"