cve-2026-95845

HIGH CVSS 8.7 cvelistv5
Description

Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, the broker does not enforce a maximum length for pending per-session message queues. When a fast publisher sends messages to a slow subscriber whose in-flight window is full, queued messages can accumulate without bound in memory or persistent storage. Remote clients can use this condition to exhaust broker resources and cause a denial of service. This issue is fixed in version 0.18.1.

Timeline
Published
2026-09-23 16:29 UTC
Last Modified
2026-09-23
CVSS Details
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
Affected Products
  • moquette-io moquette
Weaknesses (CWE)
References
Linked Vulnerabilities

No linked vulnerabilities found.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "moquette",
          "vendor": "moquette-io",
          "versions": [
            {
              "status": "affected",
              "version": "< 0.18.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Moquette is a lightweight Java MQTT broker. Prior to 0.18.1, the broker does not enforce a maximum length for pending per-session message queues. When a fast publisher sends messages to a slow subscriber whose in-flight window is full, queued messages can accumulate without bound in memory or persistent storage. Remote clients can use this condition to exhaust broker resources and cause a denial of service. This issue is fixed in version 0.18.1."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-23T16:29:51.402Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhq",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/moquette-io/moquette/security/advisories/GHSA-5f42-97gr-vfhq"
        },
        {
          "name": "https://github.com/moquette-io/moquette/commit/2482cadfba44e615be704b892009a57ce06a1aba",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/moquette-io/moquette/commit/2482cadfba44e615be704b892009a57ce06a1aba"
        },
        {
          "name": "https://github.com/moquette-io/moquette/releases/tag/v0.18.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/moquette-io/moquette/releases/tag/v0.18.1"
        }
      ],
      "source": {
        "advisory": "GHSA-f9rr-rg42-xc8x",
        "discovery": "UNKNOWN"
      },
      "title": "Moquette unbounded per-session message queues allow memory exhaustion"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-95845",
    "datePublished": "2026-09-23T16:29:51.402Z",
    "dateReserved": "2026-09-22T16:39:45.793Z",
    "dateUpdated": "2026-09-23T16:29:51.402Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}
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