CVE-2026-82409— Klever-Go Elasticsearch 批量注入漏洞
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, indexer/common.go serializedDataForUpdateAccounts places the attacker-controlled acc.Name value into an Elasticsearch _bulk JSON and NDJSON request without escaping it. The
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一、 漏洞 CVE-2026-82409 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: Elasticsearch bulk / painless injection via on-chain account name -> explorer/indexer data forgery
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, indexer/common.go serializedDataForUpdateAccounts places the attacker-controlled acc.Name value into an Elasticsearch _bulk JSON and NDJSON request without escaping it. The SetAccountName transaction accepts valid UTF-8 account names containing quotes, backslashes, and newlines, and the resulting name is stored in consensus account state. When an indexer processes the account, those characters can break the JSON string, reject a bulk batch, or inject additional bulk actions that create, overwrite, or delete documents in indices writable by the indexer. The persistent state value is replayed by new or historical indexers, and direct access to the indexing host or Elasticsearch port is not required. This issue is fixed in version 1.7.20.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:L
来源: CVE Program / CVE List V5
Vulnerability Type
对输出编码和转义不恰当
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-82409 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-82409 其他参考 (4)
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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-7c7c-373r-gfjj 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-2026-86065 | 7.5 HIGH | Klever-Go 远程节点拒绝服务漏洞 |
| 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-2026-82409
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