Denial-of-Service Vulnerability in Klever Blockchain Protocol by Klever
CVE-2026-44697

8.6HIGH

Key Information:

Vendor

Klever-io

Status
Klever-go
Vendor
CVE Published:
29 May 2026

What is CVE-2026-44697?

Klever-Go, the Go version of the Klever blockchain protocol, contains a remote denial-of-service vulnerability that affects the Batch.Decompress function. Prior to version 1.7.17, this vulnerability allows malicious peers participating in a topic managed by MultiDataInterceptor to remotely allocate excessive memory on the receiving node utilizing a minimal gossip payload under 50 KiB. This can lead to an out-of-memory (OOM) condition, potentially causing a validating node to crash, which impacts the overall liveness of the blockchain network. This critical issue has been addressed in version 1.7.17.

Affected Version(s)

klever-go < 1.7.16

References

https://github.com/klever-io/klever-go/security/advisorie...
x_refsource_CONFIRM

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.