CVE-2026-44697CWE-409CWE-770

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

High · published May 29, 2026

CVSS v3.1
8.6
EPSS
0%
Percentile
38.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00460 · 38.9th percentile
Weaknesses
CWE-409 · Improper Handling of Highly Compressed Data (Data Amplification); CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-05-29T17:14Z
EPSS history
Timeline
  • 29 MAY 17:14Z
    Klever-Go MultiDataInterceptor: remote OOM via crafted compressed P2P payload
    cvelistv5