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

CVSS 8.6 · High EPSS 0.04% · P12

Possible ATT&CK Techniques 1AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProductVersion RangeStatus
klever-ioklever-go< 1.7.16affected
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I. Basic Information for CVE-2026-44697

Vulnerability Information

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Vulnerability Title
Klever-Go MultiDataInterceptor: remote OOM via crafted compressed P2P payload
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
对高度压缩数据的处理不恰当(数据放大攻击)
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
klever-ioklever-go < 1.7.16 -

II. Public POCs for CVE-2026-44697

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III. Intelligence Information for CVE-2026-44697

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Vendor Advisories for CVE-2026-44697 (1)

IV. Related Vulnerabilities

V. Comments for CVE-2026-44697

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