Vulnerability-Lookup

CVE-2026-108949 (GCVE-0-2026-108949)

Vulnerability from cvelistv5 – Published: 2026-11-04 10:09 – Updated: 2026-11-04 21:12

Title

Apache ActiveMQ, ActiveMQ Broker: Repeated rejected temporary destination consumer requests can lead to broker OOM

Summary

Denial of Service via OOM vulnerability in Apache ActiveMQ, ActiveMQ Broker. An authenticated OpenWire client that sends a ConsumerInfo for a temporary queue/topic owned by another connection is rejected with InvalidDestinationException, but the rejected Subscription is left behind in the region's subscriptions map. Repeating the request leaks broker heap until OOM because the broker does not clean up the rejected subscriptions in the map. This issue affects Apache ActiveMQ: from 6.0.0 before 6.3.3, before 5.19.12; ActiveMQ Broker: from 6.0.0 before 6.3.3, before 5.19.12. Users are recommended to upgrade to version 6.4.0, 6.3.3, or 5.19.12, which fixes the issue.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-11-04 21:12 UTC

CWE

CWE-401 - Missing release of memory after effective lifetime

Assigner

apache CNA under the mitre root

CNA scorecard B 76/100 over 1121 records in the last 180 days details

References

2 references

URL	Tags
https://lists.apache.org/thread/2l1jbc8j88w1n9bd4…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/1…

Impacted products

2 products

Vendor	Product	Version	CPE status
Apache Software Foundation	Apache ActiveMQ	Affected: 6.0.0 , < 6.3.3 (semver) Affected: 0 , < 5.19.12 (semver)	guessed
Apache Software Foundation	ActiveMQ Broker	Affected: 6.0.0 , < 6.3.3 (semver) Affected: 0 , < 5.19.12 (semver)	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-108949

Vulnerability from fkie_nvd - Published: 2026-11-04 10:17 - Updated: 2026-11-04 22:17

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	security@apache.org	https://lists.apache.org/thread/2l1jbc8j88w1n9bd44vm9bjtj9t3o80n
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/11/03/18

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-108949",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-11-04T21:12:22.051605Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-11-04T10:17:24.160",
  "references": [
    {
      "source": "security@apache.org",
      "url": "https://lists.apache.org/thread/2l1jbc8j88w1n9bd44vm9bjtj9t3o80n"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/11/03/18"
    }
  ],
  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "security@apache.org",
      "type": "Secondary"
    }
  ]
}

GHSA-5J2C-Q47C-C6W5

Vulnerability from github – Published: 2026-11-04 12:31 – Updated: 2026-11-05 00:33

Details

Denial of Service via OOM vulnerability in Apache ActiveMQ, ActiveMQ Broker.

An authenticated OpenWire client that sends a ConsumerInfo for a temporary queue/topic owned by another connection is rejected with InvalidDestinationException, but the rejected Subscription is left behind in the region's subscriptions map. Repeating the request leaks broker heap until OOM because the broker does not clean up the rejected subscriptions in the map.

This issue affects Apache ActiveMQ: from 6.0.0 before 6.3.3, before 5.19.12; ActiveMQ Broker: from 6.0.0 before 6.3.3, before 5.19.12.

Users are recommended to upgrade to version 6.4.0, 6.3.3, or 5.19.12, which fixes the issue.

Severity

6.5 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-108949"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-11-04T10:17:24Z",
    "severity": "MODERATE"
  },
  "details": "Denial of Service via OOM vulnerability in Apache ActiveMQ, ActiveMQ Broker.\n\n\n\nAn authenticated OpenWire client that sends a ConsumerInfo for a temporary queue/topic owned by another connection is rejected with InvalidDestinationException, but the rejected Subscription is left behind in the region\u0027s subscriptions map. Repeating the request\u00a0leaks broker heap until OOM because the broker does not clean up the rejected subscriptions in the map.\n\n\n\nThis issue affects Apache ActiveMQ: from 6.0.0 before 6.3.3, before 5.19.12; ActiveMQ Broker: from 6.0.0 before 6.3.3, before 5.19.12.\n\n\n\nUsers are recommended to upgrade to version 6.4.0, 6.3.3, or 5.19.12, which fixes the issue.",
  "id": "GHSA-5j2c-q47c-c6w5",
  "modified": "2026-11-05T00:33:04Z",
  "published": "2026-11-04T12:31:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-108949"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/2l1jbc8j88w1n9bd44vm9bjtj9t3o80n"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/11/03/18"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

UBUNTU-CVE-2026-108949 (CVE-2026-108949)

Vulnerability from osv_ubuntu – Published: 2026-11-04 10:17 – Updated: 2026-11-04 10:17 – Source website

Details

Severity

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-108949	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-108949	REPORT
	https://lists.apache.org/thread/2l1jbc8j88w1n9bd4…	REPORT
	http://www.openwall.com/lists/oss-security/2026/1…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "activemq",
            "binary_version": "5.13.2+dfsg-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "libactivemq-java",
            "binary_version": "5.13.2+dfsg-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "activemq",
        "purl": "pkg:deb/ubuntu/activemq@5.13.2+dfsg-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.6.0+dfsg1-4+deb8u1ubuntu1",
        "5.6.0+dfsg1-5",
        "5.13.2+dfsg-2",
        "5.13.2+dfsg-2ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "activemq",
            "binary_version": "5.15.8-2~18.04.1~esm1"
          },
          {
            "binary_name": "libactivemq-java",
            "binary_version": "5.15.8-2~18.04.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "activemq",
        "purl": "pkg:deb/ubuntu/activemq@5.15.8-2~18.04.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.14.5-3",
        "5.15.2-2",
        "5.15.3-2",
        "5.15.8-2~18.04",
        "5.15.8-2~18.04.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "activemq",
            "binary_version": "5.15.11-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libactivemq-java",
            "binary_version": "5.15.11-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "activemq",
        "purl": "pkg:deb/ubuntu/activemq@5.15.11-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.15.10-1",
        "5.15.11-1",
        "5.15.11-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "activemq",
            "binary_version": "5.16.1-1ubuntu0.1"
          },
          {
            "binary_name": "libactivemq-java",
            "binary_version": "5.16.1-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "activemq",
        "purl": "pkg:deb/ubuntu/activemq@5.16.1-1ubuntu0.1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.16.1-1",
        "5.16.1-1ubuntu0.1~esm1",
        "5.16.1-1ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "activemq",
            "binary_version": "5.17.6+dfsg-1"
          },
          {
            "binary_name": "libactivemq-java",
            "binary_version": "5.17.6+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "activemq",
        "purl": "pkg:deb/ubuntu/activemq@5.17.6+dfsg-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.17.2+dfsg-2",
        "5.17.6+dfsg-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "activemq",
            "binary_version": "5.17.6+dfsg-2ubuntu1"
          },
          {
            "binary_name": "libactivemq-java",
            "binary_version": "5.17.6+dfsg-2ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "activemq",
        "purl": "pkg:deb/ubuntu/activemq@5.17.6+dfsg-2ubuntu1?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.17.6+dfsg-2",
        "5.17.6+dfsg-2ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "activemq",
            "binary_version": "5.17.6+dfsg-2"
          },
          {
            "binary_name": "libactivemq-java",
            "binary_version": "5.17.6+dfsg-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "activemq",
        "purl": "pkg:deb/ubuntu/activemq@5.17.6+dfsg-2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.17.6+dfsg-2"
      ]
    }
  ],
  "aliases": [],
  "details": "Denial of Service via OOM vulnerability in Apache ActiveMQ, ActiveMQ Broker. An authenticated OpenWire client that sends a ConsumerInfo for a temporary queue/topic owned by another connection is rejected with InvalidDestinationException, but the rejected Subscription is left behind in the region\u0027s subscriptions map. Repeating the request\u00a0leaks broker heap until OOM because the broker does not clean up the rejected subscriptions in the map. This issue affects Apache ActiveMQ: from 6.0.0 before 6.3.3, before 5.19.12; ActiveMQ Broker: from 6.0.0 before 6.3.3, before 5.19.12. Users are recommended to upgrade to version 6.4.0, 6.3.3, or 5.19.12, which fixes the issue.",
  "id": "UBUNTU-CVE-2026-108949",
  "modified": "2026-11-04T10:17:00Z",
  "published": "2026-11-04T10:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-108949"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-108949"
    },
    {
      "type": "REPORT",
      "url": "https://lists.apache.org/thread/2l1jbc8j88w1n9bd44vm9bjtj9t3o80n"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2026/11/03/18"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-108949"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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CVE-2026-108949 (GCVE-0-2026-108949)

FKIE_CVE-2026-108949

GHSA-5J2C-Q47C-C6W5

UBUNTU-CVE-2026-108949 (CVE-2026-108949)

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