Vulnerability-Lookup

UBUNTU-CVE-2026-87908 (CVE-2026-87908)

Vulnerability from osv_ubuntu – Published: 2026-09-11 07:16 – Updated: 2026-09-16 11:43 – Source website

Details

multiparty is a Node.js library for parsing multipart/form-data request bodies. In versions from 2.1.0 up to but not including 4.3.1, the parser does not bound the amount of memory used while accumulating the headers of a single multipart part. An unauthenticated attacker can send a single request whose part carries a very large volume of header bytes, forcing the parser to buffer all of them and exhausting the process memory, which crashes the server. This is a denial of service with no confidentiality or integrity impact. The issue is fixed in multiparty 4.3.1, which caps the size of the accumulated part headers. Users should upgrade to multiparty 4.3.1 or later.

Severity

7.5 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-87908	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-87908	REPORT
	https://github.com/pillarjs/multiparty/security/a…	REPORT
	https://cna.openjsf.org/security-advisories.html	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-multiparty",
            "binary_version": "4.0.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "node-multiparty",
        "purl": "pkg:deb/ubuntu/node-multiparty@4.0.0-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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          "type": "ECOSYSTEM"
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      ],
      "versions": [
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      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-multiparty",
            "binary_version": "4.0.0-1ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "node-multiparty",
        "purl": "pkg:deb/ubuntu/node-multiparty@4.0.0-1ubuntu1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
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        "4.0.0-1ubuntu1"
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    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-multiparty",
            "binary_version": "4.2.1-2"
          }
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      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
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      },
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          "events": [
            {
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        "4.2.1-2"
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    },
    {
      "ecosystem_specific": {
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          {
            "binary_name": "node-multiparty",
            "binary_version": "4.2.2-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "node-multiparty",
        "purl": "pkg:deb/ubuntu/node-multiparty@4.2.2-3?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
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        "4.2.2-2",
        "4.2.2-3"
      ]
    },
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      "ecosystem_specific": {
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      },
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        {
          "events": [
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          "type": "ECOSYSTEM"
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        "4.2.3-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-multiparty",
            "binary_version": "4.2.3-5"
          }
        ]
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      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "node-multiparty",
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      },
      "ranges": [
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          "events": [
            {
              "introduced": "0"
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          ],
          "type": "ECOSYSTEM"
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      ],
      "versions": [
        "4.2.3-3",
        "4.2.3-4build1",
        "4.2.3-5"
      ]
    }
  ],
  "aliases": [],
  "details": "multiparty is a Node.js library for parsing multipart/form-data request bodies. In versions from 2.1.0 up to but not including 4.3.1, the parser does not bound the amount of memory used while accumulating the headers of a single multipart part. An unauthenticated attacker can send a single request whose part carries a very large volume of header bytes, forcing the parser to buffer all of them and exhausting the process memory, which crashes the server. This is a denial of service with no confidentiality or integrity impact. The issue is fixed in multiparty 4.3.1, which caps the size of the accumulated part headers. Users should upgrade to multiparty 4.3.1 or later.",
  "id": "UBUNTU-CVE-2026-87908",
  "modified": "2026-09-16T11:43:12Z",
  "published": "2026-09-11T07:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-87908"
    },
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      "url": "https://www.cve.org/CVERecord?id=CVE-2026-87908"
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      "url": "https://github.com/pillarjs/multiparty/security/advisories/GHSA-5h46-2939-q3wh"
    },
    {
      "type": "REPORT",
      "url": "https://cna.openjsf.org/security-advisories.html"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-87908"
  ]
}

CVE-2026-87908 (GCVE-0-2026-87908)

Vulnerability from cvelistv5 – Published: 2026-09-11 06:37 – Updated: 2026-09-11 15:54

Title

multiparty vulnerable to Denial of Service via unbounded part-header accumulation

Summary

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-11 15:53 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption
CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

openjs redhat root

References

2 references

URL	Tags
https://github.com/pillarjs/multiparty/security/a…
https://cna.openjsf.org/security-advisories.html

Impacted products

1 product

Vendor	Product	Version
multiparty	multiparty	Affected: 2.1.0 , < 4.3.1 (semver) Unaffected: 4.3.1 (semver)

Credits

Alfie Goh Li Heng UlisesGascon blakeembrey

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.

Detection rules are retrieved from Rulezet.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.