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High

Security advisory

Type: advisorySources: OSVCVE: CVE-2018-12543

In Eclipse Mosquitto versions 1.5 to 1.5.2 inclusive, if a message is published to Mosquitto that has a topic starting with $, but that is not $SYS, e.g. $test/test, then an assert is triggered that should otherwise not be reachable and Mosquitto will exit.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2018-12543
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 05:13 UTC · Revision 1

Source evidence

CVE-2018-12543

core-osv · Original source

Published 15 Nov 2018, 15:29 UTC

In Eclipse Mosquitto versions 1.5 to 1.5.2 inclusive, if a message is published to Mosquitto that has a topic starting with $, but that is not $SYS, e.g. $test/test, then an assert is triggered that should otherwise not be reachable and Mosquitto will exit.

osv:CVE-2018-12543
Complete source record
{
  "id": "fba4baa066307ab21bd50f8fbdce5d28d74b8aacdf0dc93e1315fb040cd1dbb0",
  "url": "https://osv.dev/vulnerability/CVE-2018-12543",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-12543",
    "summary": "In Eclipse Mosquitto versions 1.5 to 1.5.2 inclusive, if a message is published to Mosquitto that has a topic starting with $, but that is not $SYS, e.g. $test/test, then an assert is triggered that should otherwise not be reachable and Mosquitto will exit.",
    "evidence": "osv:CVE-2018-12543",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-12543",
      "aliases": [
        "CVE-2018-12543"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/eclipse-mosquitto/mosquitto",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "3f87232065374d535fc0e552cdf30b52cbf64cf1"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.5.0"
                      },
                      {
                        "last_affected": "1.5.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.5.2",
            "v1.5.1",
            "v1.5",
            "v1.4.15",
            "v1.4.14",
            "v1.4.13",
            "v1.4.12",
            "v1.4.11",
            "v1.4.10",
            "v1.4.9",
            "v1.4.8",
            "v1.4.7",
            "v1.4.6",
            "v1.4.5",
            "v1.4.4",
            "v1.4.3",
            "v1.4.2",
            "v1.4.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-12543.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:25.844040878Z",
      "provider": "osv",
      "references": [
        "https://bugs.eclipse.org/bugs/show_bug.cgi?id=539295"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-12543",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 431460,
  "published_at": "2018-11-15T15:29:01.35+00:00"
}