Vulnerability-Lookup

UBUNTU-CVE-2026-11933 (CVE-2026-11933)

Vulnerability from osv_ubuntu – Published: 2026-06-12 02:16 – Updated: 2026-06-24 08:58 – Source website

Details

A use-after-free vulnerability exists in MongoDB Server's server-side JavaScript engine when converting BSON documents to JavaScript arrays. An authenticated user with read privileges who is able to run server-side JavaScript (for example, via $where or $function) can cause the server to access memory that has already been freed. This may result in disclosure of information from the mongod process memory or a denial of service through a server crash.

Severity

8.8 (High)


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

8.8 (High)


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

8.7 (High)


                    
                      CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-11933	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-11933	REPORT
	https://jira.mongodb.org/browse/SERVER-128125	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "mongodb",
            "binary_version": "1:2.4.9-1ubuntu2+esm2"
          },
          {
            "binary_name": "mongodb-clients",
            "binary_version": "1:2.4.9-1ubuntu2+esm2"
          },
          {
            "binary_name": "mongodb-server",
            "binary_version": "1:2.4.9-1ubuntu2+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "mongodb",
        "purl": "pkg:deb/ubuntu/mongodb@1:2.4.9-1ubuntu2+esm2?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:2.4.6-0ubuntu5",
        "1:2.4.6-0ubuntu6",
        "1:2.4.8-1ubuntu1",
        "1:2.4.8-2",
        "1:2.4.9-1",
        "1:2.4.9-1ubuntu1",
        "1:2.4.9-1ubuntu2",
        "1:2.4.9-1ubuntu2+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "mongodb",
            "binary_version": "1:2.6.10-0ubuntu1+esm2"
          },
          {
            "binary_name": "mongodb-clients",
            "binary_version": "1:2.6.10-0ubuntu1+esm2"
          },
          {
            "binary_name": "mongodb-server",
            "binary_version": "1:2.6.10-0ubuntu1+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "mongodb",
        "purl": "pkg:deb/ubuntu/mongodb@1:2.6.10-0ubuntu1+esm2?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:2.6.10-0ubuntu1",
        "1:2.6.10-0ubuntu1+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "mongodb",
            "binary_version": "1:3.6.3-0ubuntu1.4+esm2"
          },
          {
            "binary_name": "mongodb-clients",
            "binary_version": "1:3.6.3-0ubuntu1.4+esm2"
          },
          {
            "binary_name": "mongodb-server",
            "binary_version": "1:3.6.3-0ubuntu1.4+esm2"
          },
          {
            "binary_name": "mongodb-server-core",
            "binary_version": "1:3.6.3-0ubuntu1.4+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "mongodb",
        "purl": "pkg:deb/ubuntu/mongodb@1:3.6.3-0ubuntu1.4+esm2?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:3.4.7-1",
        "1:3.4.7-1ubuntu1",
        "1:3.4.7-1ubuntu2",
        "1:3.4.7-1ubuntu4",
        "1:3.4.14-3ubuntu1",
        "1:3.4.14-3ubuntu2",
        "1:3.6.3-0ubuntu1",
        "1:3.6.3-0ubuntu1.1",
        "1:3.6.3-0ubuntu1.3",
        "1:3.6.3-0ubuntu1.4",
        "1:3.6.3-0ubuntu1.4+esm1",
        "1:3.6.3-0ubuntu1.4+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "mongodb",
            "binary_version": "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1"
          },
          {
            "binary_name": "mongodb-clients",
            "binary_version": "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1"
          },
          {
            "binary_name": "mongodb-server",
            "binary_version": "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1"
          },
          {
            "binary_name": "mongodb-server-core",
            "binary_version": "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "mongodb",
        "purl": "pkg:deb/ubuntu/mongodb@1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu2",
        "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5",
        "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.2",
        "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3",
        "1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "A use-after-free vulnerability exists in MongoDB Server\u0027s server-side JavaScript engine when converting BSON documents to JavaScript arrays. An authenticated user with read privileges who is able to run server-side JavaScript (for example, via $where or $function) can cause the server to access memory that has already been freed. This may result in disclosure of information from the mongod process memory or a denial of service through a server crash.",
  "id": "UBUNTU-CVE-2026-11933",
  "modified": "2026-06-24T08:58:47Z",
  "published": "2026-06-12T02:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-11933"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-11933"
    },
    {
      "type": "REPORT",
      "url": "https://jira.mongodb.org/browse/SERVER-128125"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-11933"
  ]
}

CVE-2026-11933 (GCVE-0-2026-11933)

Vulnerability from cvelistv5 – Published: 2026-06-12 01:57 – Updated: 2026-06-13 03:55

Title

Post-authentication use-after-free in server-side JavaScript BSON-to-array conversion

Summary

Severity

8.8 (High)


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

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-12 00:00 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

mongodb mitre root

References

1 reference

URL	Tags
https://jira.mongodb.org/browse/SERVER-128125

Impacted products

1 product

Vendor	Product	Version
MongoDB	MongoDB	Affected: 8.3.0 , ≤ 8.3.3 (semver) Affected: 8.2.0 , ≤ 8.2.10 (semver) Affected: 8.0.0 , ≤ 8.0.25 (semver) Affected: 7.0.0 , ≤ 7.0.36 (semver) Affected: 6.0 , ≤ 6.0.28 (semver) Affected: 5.0 , ≤ 5.0.33 (semver) Affected: 4.4.0 , ≤ 4.4.30 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-11933",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-12T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-13T03:55:46.393Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "MongoDB",
          "vendor": "MongoDB",
          "versions": [
            {
              "lessThanOrEqual": "8.3.3",
              "status": "affected",
              "version": "8.3.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.2.10",
              "status": "affected",
              "version": "8.2.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "8.0.25",
              "status": "affected",
              "version": "8.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.36",
              "status": "affected",
              "version": "7.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.28",
              "status": "affected",
              "version": "6.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.0.33",
              "status": "affected",
              "version": "5.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.4.30",
              "status": "affected",
              "version": "4.4.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
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            }
          ],
          "value": "A use-after-free vulnerability exists in MongoDB Server\u0027s server-side JavaScript engine when converting BSON documents to JavaScript arrays. An authenticated user with read privileges who is able to run server-side JavaScript (for example, via $where or $function) can cause the server to access memory that has already been freed. This may result in disclosure of information from the mongod process memory or a denial of service through a server crash."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
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            "confidentialityImpact": "HIGH",
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            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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          "scenarios": [
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            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
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              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
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        "dateUpdated": "2026-06-12T01:58:46.264Z",
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      "references": [
        {
          "url": "https://jira.mongodb.org/browse/SERVER-128125"
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    "datePublished": "2026-06-12T01:57:32.014Z",
    "dateReserved": "2026-06-10T18:54:51.125Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

UBUNTU-CVE-2026-11933 (CVE-2026-11933)

CVE-2026-11933 (GCVE-0-2026-11933)

Tags

Sightings

Nomenclature

Related by attack behaviour