High 8.7Published Sep 23, 2026

CVE-2026-95843Moquette malformed shared subscriptions can crash command processing

Updated under an hour ago (2026-10-19 07:23 UTC)

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It affects moquette-io moquette and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for moquette-io moquette

Exploited in the last 30 days

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.

CVSS: 8.7 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-20
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Sep 23, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

moquette-io moquette moquette_io:moquette (from the name)	before 0.18.1	CNA record
moquette moquette moquette:moquette	before 0.18.1	NVD

References

https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhqx-refsource-confirm, exploit, mitigation, vendor-advisory
https://github.com/moquette-io/moquette/pull/962x-refsource-misc, patch
https://github.com/moquette-io/moquette/commit/affdc71fdba92dc020421678970ae70518fb6da2x-refsource-misc, patch
https://github.com/moquette-io/moquette/releases/tag/v0.18.1x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.