Vulnerability-Lookup

FKIE_CVE-2026-103582

Vulnerability from fkie_nvd - Published: 2026-11-04 11:17 - Updated: 2026-11-04 14:10

Severity

Summary

Unbounded memory allocation and missing frame size validation in Apache NMS ActiveMQ (the .NET OpenWire client, package Apache.NMS.ActiveMQ) before 2.3.0. The OpenWire unmarshalling code trusted the frame size and the length and count fields read from the network. It did not enforce a maximum frame size, and it did not check that decoded lengths fit within the frame being read. A malicious or compromised broker, or an attacker able to intercept and modify an unencrypted connection, could send a crafted OpenWire frame with an oversized or negative length. This could cause the client to attempt very large memory allocations, leading to excessive memory consumption, an OutOfMemoryException or an uncaught exception, and a denial of service of the client application. Users are recommended to upgrade to version 2.3.0, which enforces a configurable maximum frame size and validates lengths against the size of the frame being read.

References

	URL	Tags
	security@apache.org	https://lists.apache.org/thread/vgn9pnsc7g9dhcctt804kd50tvs0ndq0
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/11/03/15

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
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    {
      "affectedData": [
        {
          "collectionURL": "https://nuget.org/packages",
          "defaultStatus": "unaffected",
          "packageName": "Apache.NMS.ActiveMQ",
          "packageURL": "pkg:nuget/Apache.NMS.ActiveMQ",
          "product": "Apache ActiveMQ NMS OpenWire Client Library",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThanOrEqual": "2.2.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
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      "lang": "en",
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    }
  ],
  "id": "CVE-2026-103582",
  "lastModified": "2026-11-04T14:10:09.713",
  "metrics": {},
  "published": "2026-11-04T11:17:13.637",
  "references": [
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      "source": "security@apache.org",
      "url": "https://lists.apache.org/thread/vgn9pnsc7g9dhcctt804kd50tvs0ndq0"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/11/03/15"
    }
  ],
  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-789"
        }
      ],
      "source": "security@apache.org",
      "type": "Secondary"
    }
  ]
}

CVE-2026-103582 (GCVE-0-2026-103582)

Vulnerability from cvelistv5 – Published: 2026-11-04 10:16 – Updated: 2026-11-04 11:10

Title

Apache ActiveMQ NMS OpenWire Client Library: Unbounded/Unvalidated Length Fields in Apache.NMS.OpenWire Unmarshalling (DoS)

Summary

Severity

No CVSS data available.

CWE

CWE-789 - Memory allocation with excessive size value

Assigner

apache CNA under the mitre root

CNA scorecard B 76/100 over 1170 records in the last 180 days details

References

2 references

URL	Tags
https://lists.apache.org/thread/vgn9pnsc7g9dhcctt…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/1…

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache ActiveMQ NMS OpenWire Client Library	Affected: 0 , ≤ 2.2.0 (semver)

Credits

Biswajeet Ray

Show details on NVD website

JSON

To clipboard

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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

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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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