CVE-2026-95843— Moquette malformed shared subscriptions can crash command processing
一分钟漏洞结论
影响对象
moquette-io moquette
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。
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, PostOffice.subscribe parses a shared-subscription filter through SharedSubscriptionUtils.extractShareName before validating the complete $share/{shareName}/{topicFilter} structure. A remote client ca
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一、 漏洞 CVE-2026-95843 基础信息
漏洞信息
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Vulnerability Title
Moquette malformed shared subscriptions can crash command processing
来源: CVE Program / CVE List V5
Vulnerability Description
Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, PostOffice.subscribe parses a shared-subscription filter through SharedSubscriptionUtils.extractShareName before validating the complete $share/{shareName}/{topicFilter} structure. A remote client can send a filter such as $share/grp without a topic-filter portion, causing a StringIndexOutOfBoundsException while calculating the share name. The exception terminates command handling on the shared session event loop and can deny service to other client sessions assigned to that loop. This issue is fixed in version 0.18.1.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| moquette-io | moquette | < 0.18.1 | - |
|
二、漏洞 CVE-2026-95843 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-95843 其他参考 (1)
CVE-2026-95843 其他参考 (3)
同批安全公告 · moquette-io · 2026-09-23 · 共 8 条
| CVE-2026-85724 | 9.6 CRITICAL | Moquette ACL通配符注入授权绕过漏洞 |
| CVE-2026-95848 | 9.3 CRITICAL | Moquette fails open when configured authentication or authorization classes cannot load |
| CVE-2026-95847 | 8.8 HIGH | Moquette client IDs can cause cross-session H2 durable-queue corruption |
| CVE-2026-95846 | 8.7 HIGH | Moquette publishes Last-Will messages without enforcing write authorization |
| CVE-2026-95845 | 8.7 HIGH | Moquette unbounded per-session message queues allow memory exhaustion |
| CVE-2026-95842 | 8.7 HIGH | Moquette uncaught MQTT command exceptions can terminate shared session event loops |
| CVE-2026-95844 | 8.7 HIGH | Moquette deeply nested MQTT topics can cause stack exhaustion |
IV. Related Vulnerabilities
Same product: moquette
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CVE-2026-95848
Moquette fails open when configured authentication or author -
CVE-2026-95847
Moquette client IDs can cause cross-session H2 durable-queue -
CVE-2026-95846
Moquette publishes Last-Will messages without enforcing writ -
CVE-2026-95845
Moquette unbounded per-session message queues allow memory e -
CVE-2026-95844
Moquette deeply nested MQTT topics can cause stack exhaustio
Same vendor: moquette-io
-
CVE-2026-95848
Moquette fails open when configured authentication or author -
CVE-2026-95847
Moquette client IDs can cause cross-session H2 durable-queue -
CVE-2026-95846
Moquette publishes Last-Will messages without enforcing writ -
CVE-2026-95845
Moquette unbounded per-session message queues allow memory e -
CVE-2026-95844
Moquette deeply nested MQTT topics can cause stack exhaustio
V. Comments for CVE-2026-95843
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