Denial of Service Vulnerability in Klever-Go by Klever
CVE-2026-52879

7.5HIGH

Key Information:

Vendor

Klever-io

Status
Klever-go
Vendor
CVE Published:
7 August 2026

What is CVE-2026-52879?

Klever-Go, the Go implementation of the Klever blockchain protocol, presents a denial of service vulnerability in versions 1.7.14 through 1.7.17. Incoming direct messages are handled by spawning new goroutines without proper checks, leading to unbounded creation of goroutines. This allows a single connected peer to overwhelm the node's capacity by sending a flood of messages, resulting in decreased performance and denial of service for legitimate users. The vulnerability has been addressed in version 1.7.18, which includes necessary safeguards against such attacks.

Affected Version(s)

klever-go >= 1.7.14, < 1.7.18

References

https://github.com/klever-io/klever-go/security/advisorie...
x_refsource_CONFIRM
https://github.com/klever-io/klever-go/releases/tag/v1.7.18
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.