CVE-2026-44697

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

Published May 29, 2026 CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-87m7-qffr-542v Klever-Go MultiDataInterceptor has remote OOM via crafted compressed P2P payload
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Klever-io
Klever-io klever-go
Vendors & Products Klever-io
Klever-io klever-go
Type Values Removed Values Added
Description 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.
Title Klever-Go MultiDataInterceptor: remote OOM via crafted compressed P2P payload
Weaknesses CWE-409
CWE-770
References
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 21, 2026, 7:50 PM
Reserved
May 7, 2026, 5:07 PM
Status
Deferred
Published
May 29, 2026, 6:17 PM
Modified
Jul 21, 2026, 8:17 PM