CVE catalog
CVE-2023-5632
mosquitto: CVE-2023-5632
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.80% · Oct 25, 2026
In Eclipse Mosquito before and including 2.0.5, establishing a connection to the mosquitto server without sending data causes the EPOLLOUT event to be added, which results excessive CPU consumption. This could be used by a malicious actor to perform denial of service type attack. This issue is fixed in 2.0.6
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | mosquitto | sid | 2.1.2-3 | fixed |
| Debian | mosquitto | forky | 2.1.2-3 | fixed |
| Debian | mosquitto | trixie | 2.0.21-1 | fixed |
| Debian | mosquitto | bookworm | 2.0.11-1.2+deb12u2 | fixed |
| Debian | mosquitto | bookworm-security | 2.0.11-1.2+deb12u1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | mosquitto | source | sid | 2.0.7-1 | not yet assigned | Not reported | Not reported |
| Debian | mosquitto | source | forky | 2.0.7-1 | not yet assigned | Not reported | Not reported |
| Debian | mosquitto | source | trixie | 2.0.7-1 | not yet assigned | Not reported | Not reported |
| Debian | mosquitto | source | bookworm | 2.0.7-1 | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-5632]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2023-5632]
- [https://security-tracker.debian.org/tracker/CVE-2023-5632]
- [https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-2935.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]