Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

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

Quick assessment

Affected
klever-io klever-go
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Klever Blockchain是Klever开源的一款高性能区块链网络实现。 Klever Blockchain 1.7.17之前版本存在安全漏洞，该漏洞源于Batch.Decompress函数中远程未认证拒绝服务问题，可能导致任何参与MultiDataInterceptor服务主题的节点从小于50 KiB的gossip有效载荷中分配多GB堆内存，单个数据包足以导致常规内存配置的验证器OOM崩溃，影响链活性。

CVSS 8.6 · High EPSS 0.46% · P39

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
klever-io klever-go < 1.7.17 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-44697

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Klever-Go MultiDataInterceptor: remote OOM via crafted compressed P2P payload
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对高度压缩数据的处理不恰当(数据放大攻击)
Source: CVE Program / CVE List V5
Vulnerability Title
Klever Blockchain 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Klever Blockchain是Klever开源的一款高性能区块链网络实现。 Klever Blockchain 1.7.17之前版本存在安全漏洞，该漏洞源于Batch.Decompress函数中远程未认证拒绝服务问题，可能导致任何参与MultiDataInterceptor服务主题的节点从小于50 KiB的gossip有效载荷中分配多GB堆内存，单个数据包足以导致常规内存配置的验证器OOM崩溃，影响链活性。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
klever-io klever-go < 1.7.17 -

II. Public POCs for CVE-2026-44697

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 9233 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-44697

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-44697 (1)

IV. Related Vulnerabilities

Same product: klever-go
Same vendor: klever-io
Same weakness: CWE-409

V. Comments for CVE-2026-44697

No comments yet

Leave a comment