Vulnerability Description
Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, the default-open GET /log WebSocket route configured in config/node/api.yaml and registered by network/api/api.go does not require authentication. The first client message is parsed as a logger Profile in network/api/logs/logSender.go and applied process-wide through Profile.Apply, allowing a remote client to change global log levels and formatting options until the connection closes. The same connection is registered as a log observer and can receive live process logs. An attacker can suppress normal logs, increase verbosity, distort operator visibility, and access operational information without credentials. This issue is fixed in version 1.7.20.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/klever-io/klever-go/commit/a2740c985a788fb69e17742ea4f0c37c44
- https://github.com/klever-io/klever-go/pull/74
- https://github.com/klever-io/klever-go/releases/tag/v1.7.20
- https://github.com/klever-io/klever-go/security/advisories/GHSA-9v8p-frvj-2pcm
- https://github.com/klever-io/klever-go/security/advisories/GHSA-9v8p-frvj-2pcm
FAQ
What is CVE-2026-86064?
CVE-2026-86064 is a vulnerability with a CVSS score of 8.6 (HIGH). Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, the default-open GET /log WebSocket route configured in config/node/api.yaml and registered by network/api/api.go...
How severe is CVE-2026-86064?
CVE-2026-86064 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-86064?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.