io.moquette:moquette-broker has a Missing Authorization issue — GHSA-9JJC-FW8X-FMWX

Summary

## Summary Moquette MQTT Broker fails to enforce ACL write permission checks when publishing Will (Last Will and Testament) messages on behalf of disconnected clients. All normal PUBLISH paths (`receivedPublishQos0`, `receivedPublishQos1`, `receivedPublishQos2`) correctly invoke `authorizator.canWrite()` before publishing, but the Will message publishing path (`fireWill()` → `publishWill()` →…

Timeline

Published by source

2026-09-18

Risk context

• Reported severity or threat level: high.
• Reported CVSS score: 7.5 out of 10.
• Review exposure for the affected product or family: maven: io.moquette:moquette-broker.

Product

maven: io.moquette:moquette-broker

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

GHSA-9JJC-FW8X-FMWX

Source

GitHub

Vendor

GitHub

Published by source

2026-09-18

Last source activity

2026-09-18

Additional identifiers

CVE-2026-85058

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.