{"id":"CVE-2026-54755","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.","aliases":["GHSA-cgc5-v3f2-8m2v","GO-2026-6310"],"modified":"2026-09-02T19:55:46.899060346Z","published":"2026-08-28T16:23:44.276Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-190"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54755.json"},"references":[{"type":"WEB","url":"https://github.com/klever-io/klever-go/releases/tag/v1.7.19"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54755.json"},{"type":"ADVISORY","url":"https://github.com/klever-io/klever-go/security/advisories/GHSA-cgc5-v3f2-8m2v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54755"},{"type":"FIX","url":"https://github.com/klever-io/klever-go/commit/8bcc600b0ac88070740c63c7ce1c8a968dd85251"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/klever-io/klever-go","events":[{"introduced":"0"},{"fixed":"8bcc600b0ac88070740c63c7ce1c8a968dd85251"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"1.7.19"}]}}],"versions":["v1.7.18","v1.7.17","v1.7.16","v1.7.15","v1.7.14"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54755.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H"}]}