Resource allocation without limits in Eclipse Foundation Mosquitto
Priority LOW 33CWE-789Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-789.
Summary
In Mosquitto before 2.0.16, excessive memory is allocated based on malicious initial packets that are not CONNECT packets.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00709 53rd percentileScored 2026-11-07
Fix Fixed Mosquitto (Eclipse): 2.0.16Red Hat: 2 advisories
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Eclipse Foundation | Mosquitto | before 2.0.16 | 2.0.16 | Patch available | CNA |
- Mosquitto VendorEclipse Foundation Affected before 2.0.16 Fixed in 2.0.16 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:* | before 2.0.16 | Vulnerable | Eclipse Foundation |
- cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:* Versions before 2.0.16 Vulnerable ·Eclipse Foundation
Remediation
- Fix · CNA Mosquitto (Eclipse) Fixed in 2.0.16
Red Hat 2 advisories
- RHSA-2024:1061 Released 2024-02-29 · Red Hat rating ModerateRed Hat Satellite 6 security and bug fix update
- Red Hat Satellite 6.13 for RHEL 8 foreman-3.5.1.24-1.el8sat, foreman-cli-3.5.1.24-1.el8sat, foreman-debug-3.5.1.24-1.el8sat +11
- RHSA-2024:0797 Released 2024-02-13 · Red Hat rating ImportantSatellite 6.14.2 Async Security Update
- Red Hat Satellite 6.14 for RHEL 8 candlepin-4.3.11-1.el8sat, candlepin-selinux-4.3.11-1.el8sat, mosquitto-2.0.17-1.el8sat +5
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Eclipse Mosquitto 2.0.16
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2023-03353 Memory leak in Eclipse Foundation MosquittoPriority LOW 34
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Satellite 6.13 for RHEL 8 | Fixed | RHSA-2024:1061 |
| Red Hat Satellite 6.14 for RHEL 8 | Fixed | RHSA-2024:0797 |
Not affected: 4 products
- Red Hat Integration Camel K 1
- Red Hat Satellite 6.13 for RHEL 8
- Red Hat Satellite 6.14 for RHEL 8
- Red Hat build of Apache Camel for Spring Boot 3
Timeline
- 2026-10-02 Threatist record created from CVE-2023-0809
- 2026-10-03 Alias added: GHSA-v9xr-r3xx-x9gc
References
More Eclipse Foundation Mosquitto vulnerabilities
- TI-2024-09749 Eclipse Mosquito: Heap Buffer Overflow in my_subscribe_callback CVSS 4.0HIGH 7.2
- TI-2018-09002 Reachable assertion in Eclipse Mosquitto CVSS 3.0HIGH 7.5
- TI-2023-12912 The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that… CVSS 3.1HIGH 7.5
- TI-2017-05287 Uncontrolled resource consumption in Eclipse Mosquitto CVSS 3.0HIGH 7.5
- TI-2023-05183 Unconditionally adding an event to the epoll causes excessive CPU consumption CVSS 3.1HIGH 7.5
- TI-2018-09010 Improper authentication in Eclipse Mosquitto CVSS 3.0HIGH 8.1
Sources
- CVE-2023-0809 · CVE Program
- CVE-2023-0809 · NVD
- FIRST EPSS
- GHSA-v9xr-r3xx-x9gc · GitHub Advisory Database · CC BY 4.0
- CVE-2023-0809 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences