Vulnerability Description
Klever-Go is the Go implementation of the Klever blockchain protocol. Versions from 1.7.14 through 1.7.17 are vulnerable to a remotely triggerable denial of service. Both REST APIs are started with the Gin Engine.Run convenience method, which serves requests through Go's default HTTP server with no ReadHeaderTimeout, ReadTimeout, or MaxHeaderBytes configured. As a result, incoming connections that never complete their request headers are held open indefinitely. When a REST listener is reachable beyond localhost through the documented all-interface bind or a Docker port-publish deployment, a single unauthenticated client can open many slow-header connections and hold them open until server file descriptors are exhausted, preventing the API from accepting new connections. This renders the REST API unavailable to legitimate clients. This issue is fixed in version 1.7.18.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/klever-io/klever-go/releases/tag/v1.7.18
- https://github.com/klever-io/klever-go/security/advisories/GHSA-w4c6-7r69-w7j9
FAQ
What is CVE-2026-52880?
CVE-2026-52880 is a vulnerability with a CVSS score of 7.5 (HIGH). Klever-Go is the Go implementation of the Klever blockchain protocol. Versions from 1.7.14 through 1.7.17 are vulnerable to a remotely triggerable denial of service. Both REST APIs are started with th...
How severe is CVE-2026-52880?
CVE-2026-52880 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-52880?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.