CVE-2021-34431
MEDIUM6.5EPSS 0.37%Published: 7/22/2021Modified: 4/28/2026
Also known as:DEBIAN-CVE-2021-34431
Description
In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated client that had connected with MQTT v5 sent a crafted CONNECT message to the broker a memory leak would occur, which could be used to provide a DoS attack against the broker.
Affected packages (1)
- Debian/mosquittofrom 0, < 2.0.11-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |