CVE-2026-44697 HIGH

CVE-2026-44697: Klever-Go MultiDataInterceptor: remote OOM via crafted compressed P2P payload

Vendor Klever-Io
Product klever-go
Weakness CWE-409
Published May 29, 2026
Last update June 2, 2026

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

What the vulnerability does

01Description

Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.17, a remote, unauthenticated denial-of-service vulnerability in Batch.Decompress (data/batch/batch.go) allows any peer that participates in a topic served by MultiDataInterceptor to allocate multi-gigabyte heaps on the receiving node from a sub-50 KiB gossip payload. A single packet is sufficient to OOM-kill a validator with conventional memory provisioning. Fleet-wide application affects chain liveness. This vulnerability is fixed in 1.7.17.

Key dates

02Disclosure timeline

May 29, 2026 CVE published
June 2, 2026 Record updated