Description
FlashMQ is a MQTT broker/server, designed for multi-CPU environments. Prior to version 1.23.2, any authenticated user can create sessions and have them collect QoS messages. When not sent to a client, these are then not released upon (eventual) session expiration. Version 1.23.2 fixes the issue.
Affected products
flashmq: flashmq
References3
- github.com/halfgaar/FlashMQ/security/advisories/GHSA-7mhp-22q4-… PatchVendor Advisory
- github.com/halfgaar/FlashMQ/commit/e86c49360ef4387440c97f591770… Patch
- github.com/halfgaar/FlashMQ/issues/154 Issue Tracking
Metrics
- CVSS 3.1
-
4.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - EPSS — exploit probability
- 0% percentile: 28 · as of 10 November 2026
- CWE
- CWE-772
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