CVE-2026-55764

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.

• CWE-190

• https://github.com/klever-io/klever-go/commit/8bcc600b0ac88070740c63c7ce1c8a968dd85251
• https://github.com/klever-io/klever-go/releases/tag/v1.7.19
• https://github.com/klever-io/klever-go/security/advisories/GHSA-mrpp-v6pg-p54x
• https://github.com/klever-io/klever-go/security/advisories/GHSA-mrpp-v6pg-p54x

Published

Aug 28, 2026

Last Modified

Sep 9, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-55759Rocket.Chat is an open-source, secure, fully customizable co…7.4
• CVE-2026-5576A flaw has been found in SourceCodester/jkev Record Manageme…4.7
• CVE-2026-55760Handlebars.java provides logic-less and semantic Mustache te…7.5
• CVE-2026-55761Portainer Community Edition is a lightweight service deliver…5.9
• CVE-2026-55762Rocket.Chat is an open-source, secure, fully customizable co…8.1
• CVE-2026-55763Klever-Go is the Go implementation of the Klever blockchain …8.7
• CVE-2026-55765CloudNativePG is a platform designed to manage PostgreSQL da…8.5
• CVE-2026-55766guzzlehttp/psr7 is a PSR-7 HTTP message library implementati…4.8
• CVE-2026-55767Guzzle is an extensible PHP HTTP client. Prior to 7.12.1, Co…5.8
• CVE-2026-55768GoAccess is a real-time web log analyzer and interactive vie…8.7
• CVE-2026-55769CloudNativePG is a platform designed to manage PostgreSQL da…9.4
• CVE-2026-5577A vulnerability has been found in Song-Li cross_browser up t…8.6