CVE-2026-86065— Klever-Go 远程节点拒绝服务漏洞
一分钟漏洞结论
影响对象
klever-io klever-go
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, the default-open GET /subscribe endpoint in network/api/websocket/routes.go accepts unauthenticated WebSocket clients with permissive origin handling, does not call SetReadL
可能的 ATT&CK 技术 1 AI
T1190 · Exploit Public-Facing Application
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一、 漏洞 CVE-2026-86065 基础信息
漏洞信息
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
Klever-Go: Unauthenticated WebSocket /subscribe: no read-size limit, no connection cap, permissive origin -> remote node memory/goroutine exhaustion (DoS)
来源: CVE Program / CVE List V5
Vulnerability Description
Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, the default-open GET /subscribe endpoint in network/api/websocket/routes.go accepts unauthenticated WebSocket clients with permissive origin handling, does not call SetReadLimit to bound message size, and has no live-connection cap. SocketHub.HandleClientInsertion also accepts an unbounded address list that grows addressSubscription, and client.loopIn continues reading without a size limit, allowing one client to grow subscription maps or many clients to retain goroutines, buffered channels, and descriptors. The global HTTP request throttler does not count upgraded live WebSocket connections. Because the REST and WebSocket API runs in the node process, memory or scheduler exhaustion can crash the node and interrupt P2P and consensus participation. This issue is fixed in version 1.7.20.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-86065 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-86065 其他参考 (4)
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https://github.com/klever-io/klever-go/pull/76 x_refsource_MISC
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https://github.com/klever-io/klever-go/releases/tag/v1.7.20 x_refsource_MISC
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https://github.com/klever-io/klever-go/security/advisories/GHSA-4fwh-wrm6-97xm x_refsource_CONFIRM
同批安全公告 · klever-io · 2026-09-23 · 共 6 条
| CVE-2026-82405 | 8.7 HIGH | Klever-Go kleverUpdateAccountPermission账户接管漏洞 |
| CVE-2026-86064 | 8.6 HIGH | Klever-Go /log 全局日志控制漏洞 |
| CVE-2026-82409 | 8.4 HIGH | Klever-Go Elasticsearch 批量注入漏洞 |
| CVE-2026-82406 | 7.1 HIGH | Klever-Go 僵尸订单窃取漏洞 |
| CVE-2026-82407 | 7.0 HIGH | Klever-Go 验证者注册未验证BLS公钥致拒绝服务 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-86065
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