CVE-2026-55764
- Source
- https://cve.org/CVERecord?id=CVE-2026-55764
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-55764.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-55764
- Aliases
- Downstream
openSUSE (1)
- Related
- Published
- 2026-08-28T22:08:27Z
- Modified
- 2026-10-16T02:35:56Z
- Severity
-
- 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Klever-Go: SFT add-quantity `int64` overflow bypasses a finite per-nonce MaxSupply
- Details
-
Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.19, Klever-Go allows a mint-role holder to bypass a finite per-nonce MaxSupply on the semi-fungible token add-quantity path. In core/kapp/systemAccount/systemAcount.go, SFTAddCirculation performed meta.Circulation += amount before evaluating whether Circulation exceeded MaxSupply, without checking for signed int64 overflow. A large positive raw Amount supplied through processSemiFungibleAddQuantity in core/kapp/kda/mint.go can wrap Circulation negative, causing the signed maximum-supply comparison to pass and crediting approximately MaxInt64 units while corrupting the on-chain counter. The fungible path is not affected because its MintedValue <= 0 guard detects the overflow. The correction uses the consensus activation flag FixMarketBuyOverflow. This issue is fixed in version 1.7.19.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-190" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55764.json" }- References
-
- https://github.com/klever-io/klever-go/releases/tag/v1.7.19
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55764.json
- https://github.com/klever-io/klever-go/security/advisories/GHSA-mrpp-v6pg-p54x
- https://nvd.nist.gov/vuln/detail/CVE-2026-55764
- https://github.com/klever-io/klever-go/commit/8bcc600b0ac88070740c63c7ce1c8a968dd85251
Affected packages
Git / github.com/klever-io/klever-go
Affected ranges
- Type
- GIT
- Repo
- https://github.com/klever-io/klever-go
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "fixed": "1.7.19" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "8bcc600b0ac88070740c63c7ce1c8a968dd85251" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v1.7.19", "range": [ { "fixed": "8bcc600b0ac88070740c63c7ce1c8a968dd85251" } ], "source": "REFERENCES_TAG" }, { "range": [ { "introduced": "0" }, { "fixed": "1.7.19" } ], "source": "DESCRIPTION" } ] }