CVE-2019-11779
In Eclipse Mosquitto 1.5.0 to 1.6.5 inclusive, if a malicious MQTT client sends a SUBSCRIBE packet containing a topic that consists of approximately 65400 or more '/' characters, i.e. the topic
02 Description
In Eclipse Mosquitto 1.5.0 to 1.6.5 inclusive, if a malicious MQTT client sends a SUBSCRIBE packet containing a topic that consists of approximately 65400 or more '/' characters, i.e. the topic
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.74% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 85.8% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2019-09-19 13:30Z7 YR AGO
- Last updated
- 2024-08-04 23:03Z2 YR AGO
- Reserved
- 2019-05-06
- Assigning CNA
- eclipse
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- afb562521d5c999d20e185d12cb59dd814ecaf24cce575f7b1893e0a6dd531fa
05 Affected products
06 References
- bugs.eclipse.orghttps://bugs.eclipse.org/bugs/show_bug.cgi?id=551160
- usn.ubuntu.comUSN-4137-1https://usn.ubuntu.com/4137-1/
- lists.opensuse.orgopenSUSE-SU-2019:2206http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00077.html
- lists.opensuse.orgopenSUSE-SU-2019:2247http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00008.html
- lists.fedoraproject.orgFEDORA-2019-4c69fb4cd7https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HFWQBNFTAVHPUYNGYO2TCPF5PCSWC2Z7/
- lists.fedoraproject.orgFEDORA-2019-8b83c261ddhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWNVTFA2CKXERXRYPYE2YFTZP4GNBGYY/
- lists.fedoraproject.orgFEDORA-2019-d99e2329cbhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D4WMHIM64Q35NGTR6R3ILZUL4MA4ANB5/
- lists.debian.org[debian-lts-announce] 20191026 [SECURITY] [DLA 1972-1] mosquitto security updatehttps://lists.debian.org/debian-lts-announce/2019/10/msg00035.html
- www.debian.orgDSA-4570https://www.debian.org/security/2019/dsa-4570
- seclists.org20191118 [SECURITY] [DSA 4570-1] mosquitto security updatehttps://seclists.org/bugtraq/2019/Nov/25
07 Fixed in
Debian 12
- mosquitto Fixed in 1.6.6-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- mosquitto Fixed in 1.6.6-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- mosquitto Fixed in 1.6.6-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.