Vulnerability-Lookup

CVE-2026-96749 (GCVE-0-2026-96749)

Vulnerability from cvelistv5 – Published: 2026-09-24 18:18 – Updated: 2026-09-26 03:55

Title

Heap out-of-bounds write via signed size overflow in BSON document encoding

Summary

An integer overflow in the BSON document encoding component of the MongoDB Python Driver's bundled native extension may occur when a single document is built from an unusually large amount of caller-supplied data. Size arithmetic is performed in a signed 32-bit type, and the guard meant to catch the overflow is written in a form whose behavior is not defined by the C language standard. A party with no privileges who can place a very large value into data that an application encodes may, depending on how the native extension was built, cause a write outside the bounds of an allocated buffer inside the application's own process.

Severity

7.5 (High)


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

8.4 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-25 00:00 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mongodb CNA under the mitre root

CNA scorecard C 70/100 over 262 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/mongodb/mongo-python-driver/se…
https://github.com/mongodb/mongo-python-driver/re…
https://github.com/mongodb/mongo-python-driver/bl…

Impacted products

1 product

Vendor	Product	Version	CPE status
MongoDB	Python Driver	Affected: 1.9.0 , < 4.18.2 (semver)	guessed

Show details on NVD website

JSON

To clipboard

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BREW-MONGO-ORCHESTRATION… (GHSA-V4X9-3549-CRWV)

Vulnerability from osv_homebrew – Published: 2026-10-06 05:01 – Updated: 2026-10-29 23:26 – Source website

Summary

PyMongo: PYTHON-5996 Heap out-of-bounds write via signed size overflow in BSON document encoding

Details

Severity

8.4 (High)


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

7.5 (High)


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

References

URL

Type

	https://github.com/mongodb/mongo-python-driver/se…	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2026-96749	ADVISORY
	https://github.com/mongodb/mongo-python-driver/pu…	WEB
	https://github.com/mongodb/mongo-python-driver/co…	WEB
	https://github.com/mongodb/mongo-python-driver/co…	WEB
	https://github.com/mongodb/mongo-python-driver	PACKAGE
	https://github.com/mongodb/mongo-python-driver/bl…	WEB
	https://github.com/mongodb/mongo-python-driver/re…	WEB
	https://www.mongodb.com/community/forums/t/pymong…	WEB

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": "bump",
        "range_state": "fixed",
        "resource": "pymongo",
        "resource_purl": "pkg:pypi/pymongo@4.19.0",
        "upstream_fixed_in": "4.18.2"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "mongo-orchestration",
        "purl": "pkg:brew/mongo-orchestration"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.5"
            },
            {
              "fixed": "0.11.2_4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "high",
    "source": "matched",
    "strategy": "registry",
    "upstream_evidence": [
      {
        "ecosystem": "PyPI",
        "key": "pkg:pypi/pymongo@4.19.0",
        "name": "pymongo",
        "resource": "pymongo",
        "strategy": "registry",
        "subject_version": "4.19.0"
      }
    ]
  },
  "details": "An integer overflow in the BSON document encoding component of the MongoDB Python Driver\u0027s bundled native extension may occur when a single document is built from an unusually large amount of caller-supplied data. Size arithmetic is performed in a signed 32-bit type, and the guard meant to catch the overflow is written in a form whose behavior is not defined by the C language standard. A party with no privileges who can place a very large value into data that an application encodes may, depending on how the native extension was built, cause a write outside the bounds of an allocated buffer inside the application\u0027s own process.",
  "id": "BREW-mongo-orchestration-CVE-2026-96749",
  "modified": "2026-10-29T23:26:10Z",
  "published": "2026-10-06T05:01:25Z",
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    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/pull/3066"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/commit/640dd2383a1a2fb1a10e5222d50ebc0b22a61bd7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/commit/6ab44be0e97c9d1d5a23725c4978fb25f3249485"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mongodb/mongo-python-driver"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/blob/4.18.2/doc/changelog.rst"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/releases/tag/4.18.2"
    },
    {
      "type": "WEB",
      "url": "https://www.mongodb.com/community/forums/t/pymongo-4-18-2-released/343732"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "PyMongo: PYTHON-5996 Heap out-of-bounds write via signed size overflow in BSON document encoding",
  "upstream": [
    "GHSA-v4x9-3549-crwv",
    "CVE-2026-96749",
    "PYSEC-2026-4296"
  ]
}

BREW-PROWLER-CVE-2026-96749 (GHSA-V4X9-3549-CRWV)

Vulnerability from osv_homebrew – Published: 2026-10-06 19:06 – Updated: 2026-10-16 09:56 – Source website

Summary

PyMongo: PYTHON-5996 Heap out-of-bounds write via signed size overflow in BSON document encoding

Details

Severity

8.4 (High)


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

7.5 (High)


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

References

URL

Type

	https://github.com/mongodb/mongo-python-driver/se…	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2026-96749	ADVISORY
	https://github.com/mongodb/mongo-python-driver/pu…	WEB
	https://github.com/mongodb/mongo-python-driver/co…	WEB
	https://github.com/mongodb/mongo-python-driver/co…	WEB
	https://github.com/mongodb/mongo-python-driver	PACKAGE
	https://github.com/mongodb/mongo-python-driver/bl…	WEB
	https://github.com/mongodb/mongo-python-driver/re…	WEB
	https://www.mongodb.com/community/forums/t/pymong…	WEB

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": null,
        "range_state": "affected",
        "resource": "pymongo",
        "resource_purl": "pkg:pypi/pymongo@4.15.1",
        "upstream_fixed_in": "4.18.2"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "prowler",
        "purl": "pkg:brew/prowler"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.37.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "high",
    "source": "matched",
    "strategy": "registry",
    "upstream_evidence": [
      {
        "ecosystem": "PyPI",
        "key": "pkg:pypi/pymongo@4.15.1",
        "name": "pymongo",
        "resource": "pymongo",
        "strategy": "registry",
        "subject_version": "4.15.1"
      }
    ]
  },
  "details": "An integer overflow in the BSON document encoding component of the MongoDB Python Driver\u0027s bundled native extension may occur when a single document is built from an unusually large amount of caller-supplied data. Size arithmetic is performed in a signed 32-bit type, and the guard meant to catch the overflow is written in a form whose behavior is not defined by the C language standard. A party with no privileges who can place a very large value into data that an application encodes may, depending on how the native extension was built, cause a write outside the bounds of an allocated buffer inside the application\u0027s own process.",
  "id": "BREW-prowler-CVE-2026-96749",
  "modified": "2026-10-16T09:56:39Z",
  "published": "2026-10-06T19:06:28Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/security/advisories/GHSA-v4x9-3549-crwv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96749"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/pull/3066"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/commit/640dd2383a1a2fb1a10e5222d50ebc0b22a61bd7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/commit/6ab44be0e97c9d1d5a23725c4978fb25f3249485"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mongodb/mongo-python-driver"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/blob/4.18.2/doc/changelog.rst"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/releases/tag/4.18.2"
    },
    {
      "type": "WEB",
      "url": "https://www.mongodb.com/community/forums/t/pymongo-4-18-2-released/343732"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "PyMongo: PYTHON-5996 Heap out-of-bounds write via signed size overflow in BSON document encoding",
  "upstream": [
    "GHSA-v4x9-3549-crwv",
    "CVE-2026-96749",
    "PYSEC-2026-4296"
  ]
}

CERTFR-2026-AVI-1234

Vulnerability from certfr_avis - Published: 2026-09-28 - Updated: 2026-09-28

De multiples vulnérabilités ont été découvertes dans MongoDB. Elles permettent à un attaquant de provoquer une atteinte à l'intégrité des données, un contournement de la politique de sécurité et un problème de sécurité non spécifié par l'éditeur.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

Vendor	Product	Description
MongoDB	C Driver	mongo-c-driver versions antérieures à 2.5.5
MongoDB	Compass	Compass versions antérieures à 1.49.12
MongoDB	MongoDB	MongoDB versions antérieures à 1.21.10
MongoDB	C Driver	mongo-c-driver versions antérieures à 1.30.12
MongoDB	MongoDB-extension	MongoDB-extension versions 2.2.x à 2.5.x antérieures à 2.5.3
MongoDB	PyMongo	pymongo versions antérieures à 4.18.2
MongoDB	MongoDB	MongoDB versions 2.2.x à 2.5.x antérieures à 2.5.3
MongoDB	MongoDB	MongoDB versions 2.x antérieures à 2.1.10
MongoDB	MongoDB-extension	MongoDB-extension versions 2.x antérieures à 2.1.10
MongoDB	MongoDB-extension	MongoDB-extension versions antérieures à 1.21.10

References

Title

Publication Time

FKIE_CVE-2026-96749

Vulnerability from fkie_nvd - Published: 2026-09-24 19:17 - Updated: 2026-09-26 04:17

Severity

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

Summary

References

	URL	Tags
	cna@mongodb.com	https://github.com/mongodb/mongo-python-driver/blob/4.18.2/doc/changelog.rst
	cna@mongodb.com	https://github.com/mongodb/mongo-python-driver/releases/tag/4.18.2
	cna@mongodb.com	https://github.com/mongodb/mongo-python-driver/security/advisories/GHSA-v4x9-3549-crwv

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Python Driver",
          "vendor": "MongoDB",
          "versions": [
            {
              "lessThan": "4.18.2",
              "status": "affected",
              "version": "1.9.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "cna@mongodb.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An integer overflow in the BSON document encoding component of the MongoDB Python Driver\u0027s bundled native extension may occur when a single document is built from an unusually large amount of caller-supplied data. Size arithmetic is performed in a signed 32-bit type, and the guard meant to catch the overflow is written in a form whose behavior is not defined by the C language standard. A party with no privileges who can place a very large value into data that an application encodes may, depending on how the native extension was built, cause a write outside the bounds of an allocated buffer inside the application\u0027s own process."
    }
  ],
  "id": "CVE-2026-96749",
  "lastModified": "2026-09-26T04:17:52.260",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.9,
        "source": "cna@mongodb.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@mongodb.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-96749",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-25T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-24T19:17:20.963",
  "references": [
    {
      "source": "cna@mongodb.com",
      "url": "https://github.com/mongodb/mongo-python-driver/blob/4.18.2/doc/changelog.rst"
    },
    {
      "source": "cna@mongodb.com",
      "url": "https://github.com/mongodb/mongo-python-driver/releases/tag/4.18.2"
    },
    {
      "source": "cna@mongodb.com",
      "url": "https://github.com/mongodb/mongo-python-driver/security/advisories/GHSA-v4x9-3549-crwv"
    }
  ],
  "sourceIdentifier": "cna@mongodb.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ],
      "source": "cna@mongodb.com",
      "type": "Secondary"
    }
  ]
}

GHSA-V4X9-3549-CRWV

Vulnerability from github – Published: 2026-10-05 23:47 – Updated: 2026-10-05 23:47

Summary

PyMongo: PYTHON-5996 Heap out-of-bounds write via signed size overflow in BSON document encoding

Details

Severity

8.4 (High)


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

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pymongo"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-96749"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-05T23:47:10Z",
    "nvd_published_at": "2026-09-24T19:17:20Z",
    "severity": "HIGH"
  },
  "details": "An integer overflow in the BSON document encoding component of the MongoDB Python Driver\u0027s bundled native extension may occur when a single document is built from an unusually large amount of caller-supplied data. Size arithmetic is performed in a signed 32-bit type, and the guard meant to catch the overflow is written in a form whose behavior is not defined by the C language standard. A party with no privileges who can place a very large value into data that an application encodes may, depending on how the native extension was built, cause a write outside the bounds of an allocated buffer inside the application\u0027s own process.",
  "id": "GHSA-v4x9-3549-crwv",
  "modified": "2026-10-05T23:47:11Z",
  "published": "2026-10-05T23:47:10Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/security/advisories/GHSA-v4x9-3549-crwv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96749"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/pull/3066"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/commit/640dd2383a1a2fb1a10e5222d50ebc0b22a61bd7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/commit/6ab44be0e97c9d1d5a23725c4978fb25f3249485"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mongodb/mongo-python-driver"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/blob/4.18.2/doc/changelog.rst"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/releases/tag/4.18.2"
    },
    {
      "type": "WEB",
      "url": "https://www.mongodb.com/community/forums/t/pymongo-4-18-2-released/343732"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "PyMongo: PYTHON-5996 Heap out-of-bounds write via signed size overflow in BSON document encoding"
}

OPENSUSE-SU-2026:11935-1

Vulnerability from csaf_opensuse - Published: 2026-09-30 00:00 - Updated: 2026-10-01 10:22

Summary

python313-pymongo-4.18.2-1.1 on GA media

Severity

Moderate

Scope

3 vulnerabilities in this advisory, including CVE-2026-96749.

CVE-2026-96749

8.1 (High)


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

Recommended: 8 products

Open the full advisory

OPENSUSE-SU-2026:22003-1

Vulnerability from csaf_opensuse - Published: 2026-09-29 16:36 - Updated: 2026-11-10 16:02

Summary

Security update for python-pymongo

Severity

Important

Scope

3 vulnerabilities in this advisory, including CVE-2026-96749.

CVE-2026-96749

8.1 (High)


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

Recommended: 4 products

Open the full advisory

PYSEC-2026-4296

Vulnerability from pysec - Published: 2026-10-15 10:22 - Updated: 2026-10-15 14:38

Details

Severity

8.4 (High)


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

7.5 (High)


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

Impacted products

Name	purl
pymongo	pkg:pypi/pymongo

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pymongo",
        "purl": "pkg:pypi/pymongo"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.1.1pre",
        "0.1.2pre",
        "0.10",
        "0.10.1",
        "0.10.2",
        "0.10.3",
        "0.11",
        "0.11.1",
        "0.11.2",
        "0.11.3",
        "0.12",
        "0.13",
        "0.14",
        "0.14.1",
        "0.14.2",
        "0.15",
        "0.15.1",
        "0.15.2",
        "0.16",
        "0.1pre",
        "0.2pre",
        "0.3.1pre",
        "0.3pre",
        "0.4pre",
        "0.5.1pre",
        "0.5.2pre",
        "0.5.3pre",
        "0.5pre",
        "0.6",
        "0.7",
        "0.7.1",
        "0.7.2",
        "0.8",
        "0.8.1",
        "0.9",
        "0.9.1",
        "0.9.2",
        "0.9.3",
        "0.9.4",
        "0.9.5",
        "0.9.6",
        "0.9.7",
        "1.0",
        "1.1",
        "1.1.1",
        "1.1.2",
        "1.10",
        "1.10.1",
        "1.11",
        "1.2",
        "1.2.1",
        "1.3",
        "1.4",
        "1.5",
        "1.5.1",
        "1.5.2",
        "1.6",
        "1.7",
        "1.8",
        "1.8.1",
        "1.9",
        "2.0",
        "2.0.1",
        "2.1",
        "2.1.1",
        "2.2",
        "2.2.1",
        "2.3",
        "2.4",
        "2.4.1",
        "2.4.2",
        "2.5",
        "2.5.1",
        "2.5.2",
        "2.6",
        "2.6.1",
        "2.6.2",
        "2.6.3",
        "2.7",
        "2.7.1",
        "2.7.2",
        "2.8",
        "2.8.1",
        "2.9",
        "2.9.1",
        "2.9.2",
        "2.9.3",
        "2.9.4",
        "2.9.5",
        "3.0",
        "3.0.1",
        "3.0.2",
        "3.0.3",
        "3.1",
        "3.1.1",
        "3.10.0",
        "3.10.1",
        "3.11.0",
        "3.11.1",
        "3.11.2",
        "3.11.3",
        "3.11.4",
        "3.12.0",
        "3.12.1",
        "3.12.2",
        "3.12.3",
        "3.13.0",
        "3.2",
        "3.2.1",
        "3.2.2",
        "3.3.0",
        "3.3.1",
        "3.4.0",
        "3.5.0",
        "3.5.1",
        "3.6.0",
        "3.6.1",
        "3.7.0",
        "3.7.1",
        "3.7.2",
        "3.8.0",
        "3.9.0",
        "4.0",
        "4.0.1",
        "4.0.2",
        "4.1.0",
        "4.1.1",
        "4.10.0",
        "4.10.1",
        "4.11",
        "4.11.1",
        "4.11.2",
        "4.11.3",
        "4.12.0",
        "4.12.1",
        "4.13.0",
        "4.13.0.dev0",
        "4.13.1",
        "4.13.2",
        "4.14.0",
        "4.14.1",
        "4.15.0",
        "4.15.1",
        "4.15.2",
        "4.15.3",
        "4.15.4",
        "4.15.5",
        "4.16.0",
        "4.16.0.dev0",
        "4.17.0",
        "4.18.0",
        "4.18.1",
        "4.2.0",
        "4.3.2",
        "4.3.3",
        "4.4.0",
        "4.4.0b0",
        "4.4.1",
        "4.5.0",
        "4.6.0",
        "4.6.1",
        "4.6.2",
        "4.6.3",
        "4.7.0",
        "4.7.1",
        "4.7.2",
        "4.7.3",
        "4.8.0",
        "4.8.0b0",
        "4.9",
        "4.9.1",
        "4.9.2"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-96749",
    "GHSA-v4x9-3549-crwv"
  ],
  "details": "An integer overflow in the BSON document encoding component of the MongoDB Python Driver\u0027s bundled native extension may occur when a single document is built from an unusually large amount of caller-supplied data. Size arithmetic is performed in a signed 32-bit type, and the guard meant to catch the overflow is written in a form whose behavior is not defined by the C language standard. A party with no privileges who can place a very large value into data that an application encodes may, depending on how the native extension was built, cause a write outside the bounds of an allocated buffer inside the application\u0027s own process.",
  "id": "PYSEC-2026-4296",
  "modified": "2026-10-15T14:38:08.667294Z",
  "published": "2026-10-15T10:22:46.249312Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/security/advisories/GHSA-v4x9-3549-crwv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96749"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/pull/3066"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/commit/640dd2383a1a2fb1a10e5222d50ebc0b22a61bd7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/commit/6ab44be0e97c9d1d5a23725c4978fb25f3249485"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mongodb/mongo-python-driver"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/blob/4.18.2/doc/changelog.rst"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mongodb/mongo-python-driver/releases/tag/4.18.2"
    },
    {
      "type": "WEB",
      "url": "https://www.mongodb.com/community/forums/t/pymongo-4-18-2-released/343732"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/pymongo"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-v4x9-3549-crwv"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "PyMongo: PYTHON-5996 Heap out-of-bounds write via signed size overflow in BSON document encoding"
}

RHSA-2026:86891

Vulnerability from csaf_redhat - Published: 2026-10-21 11:37 - Updated: 2026-11-13 17:26

Summary

Red Hat Security Advisory: RHOAI 3.5.2 - Red Hat OpenShift AI

Severity

Critical

Scope

93 vulnerabilities in this advisory, including CVE-2026-96749.

CVE-2026-96749

A flaw was found in pymongo. An integer overflow exists in the bundled native extension for Binary JSON (BSON) document encoding when processing an unusually large amount of data. An unprivileged attacker who can submit oversized data to an application for encoding can trigger an arithmetic overflow, resulting in a write outside the boundaries of an allocated memory buffer. This issue can lead to arbitrary code execution within the application process or a denial of service (DoS) via an application crash.

6.2 (Medium)


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

Fixed: 24 products Known not affected: 350 products

https://access.redhat.com/errata/RHSA-2026:86891

Open the full advisory

RHSA-2026:87410

Vulnerability from csaf_redhat - Published: 2026-10-21 21:07 - Updated: 2026-11-13 17:26

Summary

Red Hat Security Advisory: RHOAI 2.25.12 - Red Hat OpenShift AI

Severity

Critical

Scope

177 vulnerabilities in this advisory, including CVE-2026-96749.

CVE-2026-96749

6.2 (Medium)


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

Fixed: 1 product Known not affected: 204 products

https://access.redhat.com/errata/RHSA-2026:87410

Open the full advisory

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

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.
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

CVE-2026-96749 (GCVE-0-2026-96749)

BREW-MONGO-ORCHESTRATION… (GHSA-V4X9-3549-CRWV)

BREW-PROWLER-CVE-2026-96749 (GHSA-V4X9-3549-CRWV)

Solutions

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour