Vulnerability-Lookup

CVE-2026-73562 (GCVE-0-2026-73562)

Vulnerability from cvelistv5 – Published: 2026-08-13 17:27 – Updated: 2026-08-14 18:09

Title

Mongoose: Prototype pollution in the update casting via __proto__-prefixed dotted path (Schema._getSchema/path getter)

Summary

Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Prior to 6.13.10, 7.8.10, 8.24.1, and 9.7.2, passing a user-controlled update such as MyModel.updateOne(filter, req.body) can exploit Mongoose update casting with a __proto__.x dotted path under $set. Schema.prototype.path and Schema.prototype._getPathType can treat inherited properties of schema.paths and schema.nested as schema types, allowing the casting process to set $fullPath and $parentSchemaDocArray on Object.prototype before throwing. This prototype pollution makes those properties visible on newly created objects and can cause application integrity and availability impacts. This issue is fixed in versions 6.13.10, 7.8.10, 8.24.1, and 9.7.2.

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-14 17:41 UTC

CWE

CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Assigner

GitHub_M mitre root

References

5 references

URL	Tags
https://github.com/Automattic/mongoose/security/a…	x_refsource_CONFIRM
https://github.com/Automattic/mongoose/commit/35a…	x_refsource_MISC
https://github.com/Automattic/mongoose/commit/728…	x_refsource_MISC
https://github.com/Automattic/mongoose/commit/953…	x_refsource_MISC
https://github.com/Automattic/mongoose/commit/fab…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
Automattic	mongoose	Affected: < 6.13.10 Affected: >= 7.0.0, < 7.8.10 Affected: >= 8.0.0, < 8.24.1 Affected: >= 9.0.0, < 9.7.2	guessed

Show details on NVD website

JSON

To clipboard

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bit-mongoose-2026-73562

Vulnerability from bitnami_vulndb

Published

2026-08-19 08:48

Modified

2026-08-19 09:09

Summary

Mongoose: Prototype pollution in the update casting via __proto__-prefixed dotted path (Schema._getSchema/path getter)

Details

Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Prior to 6.13.10, 7.8.10, 8.24.1, and 9.7.2, passing a user-controlled update such as MyModel.updateOne(filter, req.body) can exploit Mongoose update casting with a proto.x dotted path under $set. Schema.prototype.path and Schema.prototype._getPathType can treat inherited properties of schema.paths and schema.nested as schema types, allowing the casting process to set $fullPath and $parentSchemaDocArray on Object.prototype before throwing. This prototype pollution makes those properties visible on newly created objects and can cause application integrity and availability impacts. This issue is fixed in versions 6.13.10, 7.8.10, 8.24.1, and 9.7.2.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "mongoose",
        "purl": "pkg:bitnami/mongoose"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.13.10"
            },
            {
              "introduced": "7.0.0"
            },
            {
              "fixed": "7.8.10"
            },
            {
              "introduced": "8.0.0"
            },
            {
              "fixed": "8.24.1"
            },
            {
              "introduced": "9.0.0"
            },
            {
              "fixed": "9.7.2"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-73562"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:mongoosejs:mongoose:*:*:*:*:*:node.js:*:*"
    ],
    "severity": "Medium"
  },
  "details": "Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Prior to 6.13.10, 7.8.10, 8.24.1, and 9.7.2, passing a user-controlled update such as MyModel.updateOne(filter, req.body) can exploit Mongoose update casting with a __proto__.x dotted path under $set. Schema.prototype.path and Schema.prototype._getPathType can treat inherited properties of schema.paths and schema.nested as schema types, allowing the casting process to set $fullPath and $parentSchemaDocArray on Object.prototype before throwing. This prototype pollution makes those properties visible on newly created objects and can cause application integrity and availability impacts. This issue is fixed in versions 6.13.10, 7.8.10, 8.24.1, and 9.7.2.",
  "id": "BIT-mongoose-2026-73562",
  "modified": "2026-08-19T09:09:14.600Z",
  "published": "2026-08-19T08:48:07.081Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Automattic/mongoose/commit/35a3f33bc9a0a28671f99e3c5010000425650d0f"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Automattic/mongoose/commit/7285466b860d3b511f8d07b2ab72656703ee707a"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Automattic/mongoose/commit/953d085bee5a16b5d6c5af33a156e6314d6d9a45"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Automattic/mongoose/commit/fab793b747131c68927888cba41cf3e6d6593740"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Automattic/mongoose/security/advisories/GHSA-664h-wqgq-64gw"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73562"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Mongoose: Prototype pollution in the update casting via __proto__-prefixed dotted path (Schema._getSchema/path getter)"
}

FKIE_CVE-2026-73562

Vulnerability from fkie_nvd - Published: 2026-08-13 18:18 - Updated: 2026-08-14 19:18

Severity

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

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/Automattic/mongoose/commit/35a3f33bc9a0a28671f99e3c5010000425650d0f
	security-advisories@github.com	https://github.com/Automattic/mongoose/commit/7285466b860d3b511f8d07b2ab72656703ee707a
	security-advisories@github.com	https://github.com/Automattic/mongoose/commit/953d085bee5a16b5d6c5af33a156e6314d6d9a45
	security-advisories@github.com	https://github.com/Automattic/mongoose/commit/fab793b747131c68927888cba41cf3e6d6593740
	security-advisories@github.com	https://github.com/Automattic/mongoose/security/advisories/GHSA-664h-wqgq-64gw

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "mongoose",
          "vendor": "Automattic",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 6.13.10"
            },
            {
              "status": "affected",
              "version": "\u003e= 7.0.0, \u003c 7.8.10"
            },
            {
              "status": "affected",
              "version": "\u003e= 8.0.0, \u003c 8.24.1"
            },
            {
              "status": "affected",
              "version": "\u003e= 9.0.0, \u003c 9.7.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Prior to 6.13.10, 7.8.10, 8.24.1, and 9.7.2, passing a user-controlled update such as MyModel.updateOne(filter, req.body) can exploit Mongoose update casting with a __proto__.x dotted path under $set. Schema.prototype.path and Schema.prototype._getPathType can treat inherited properties of schema.paths and schema.nested as schema types, allowing the casting process to set $fullPath and $parentSchemaDocArray on Object.prototype before throwing. This prototype pollution makes those properties visible on newly created objects and can cause application integrity and availability impacts. This issue is fixed in versions 6.13.10, 7.8.10, 8.24.1, and 9.7.2."
    }
  ],
  "id": "CVE-2026-73562",
  "lastModified": "2026-08-14T19:18:00.350",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.5,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-73562",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-14T17:41:16.928150Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-13T18:18:18.643",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/Automattic/mongoose/commit/35a3f33bc9a0a28671f99e3c5010000425650d0f"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/Automattic/mongoose/commit/7285466b860d3b511f8d07b2ab72656703ee707a"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/Automattic/mongoose/commit/953d085bee5a16b5d6c5af33a156e6314d6d9a45"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/Automattic/mongoose/commit/fab793b747131c68927888cba41cf3e6d6593740"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/Automattic/mongoose/security/advisories/GHSA-664h-wqgq-64gw"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-664H-WQGQ-64GW

Vulnerability from github – Published: 2026-07-24 16:22 – Updated: 2026-08-13 17:27

Summary

Mongoose: Prototype pollution in mongoose update casting via __proto__-prefixed dotted path (Schema._getSchema/path getter)

Details

Impact

What kind of vulnerability is it? Who is impacted?

Prototype pollution in update casting: passing a user-controlled update to a Mongoose update, like MyModel.updateOne(filter, req.body), can cause Mongoose to set $fullPath and $parentSchemaDocArray on Object.prototype.

Example:

const mongoose = require('mongoose');
console.log('before:', Object.prototype.$fullPath);            // undefined

const User = mongoose.model('User', new mongoose.Schema({ name: String }));
const malicious = JSON.parse('{"$set": {"__proto__.x": "anything"}}');   // attacker-controlled update

const q = User.updateOne({}, {});
try { q._castUpdate(malicious); } catch (e) { /* throws AFTER the pollution side-effect */ }

console.log('after :', Object.prototype.$fullPath);            // "__proto__"
console.log('enumerable:', Object.prototype.propertyIsEnumerable('$fullPath'));  // true
console.log('fresh {}:', ({}).$fullPath);                      // "__proto__"

Patches

Has the problem been patched? What versions should users upgrade to?

9.7.2, 8.24.1. 7.8.10, 6.13.10

Workarounds

Is there a way for users to fix or remediate the vulnerability without upgrading?

Check user-controlled updates for own __proto__ properties before passing to Mongoose

References

Are there any links users can visit to find out more?

Severity

6.5 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "mongoose"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.13.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "mongoose"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.0.0"
            },
            {
              "fixed": "7.8.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "mongoose"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.0.0"
            },
            {
              "fixed": "8.24.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "mongoose"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "9.0.0"
            },
            {
              "fixed": "9.7.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-73562"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1321"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-24T16:22:34Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\n_What kind of vulnerability is it? Who is impacted?_\n\nPrototype pollution in update casting: passing a user-controlled update to a Mongoose update, like `MyModel.updateOne(filter, req.body)`, can cause Mongoose to set `$fullPath` and `$parentSchemaDocArray` on `Object.prototype`.\n\nExample:\n\n```javascript\nconst mongoose = require(\u0027mongoose\u0027);\nconsole.log(\u0027before:\u0027, Object.prototype.$fullPath);            // undefined\n\nconst User = mongoose.model(\u0027User\u0027, new mongoose.Schema({ name: String }));\nconst malicious = JSON.parse(\u0027{\"$set\": {\"__proto__.x\": \"anything\"}}\u0027);   // attacker-controlled update\n\nconst q = User.updateOne({}, {});\ntry { q._castUpdate(malicious); } catch (e) { /* throws AFTER the pollution side-effect */ }\n\nconsole.log(\u0027after :\u0027, Object.prototype.$fullPath);            // \"__proto__\"\nconsole.log(\u0027enumerable:\u0027, Object.prototype.propertyIsEnumerable(\u0027$fullPath\u0027));  // true\nconsole.log(\u0027fresh {}:\u0027, ({}).$fullPath);                      // \"__proto__\"\n```\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\n9.7.2, 8.24.1. 7.8.10, 6.13.10\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\nCheck user-controlled updates for own `__proto__` properties before passing to Mongoose\n\n### References\n_Are there any links users can visit to find out more?_",
  "id": "GHSA-664h-wqgq-64gw",
  "modified": "2026-08-13T17:27:25Z",
  "published": "2026-07-24T16:22:34Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Automattic/mongoose/security/advisories/GHSA-664h-wqgq-64gw"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Automattic/mongoose/pull/16230"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Automattic/mongoose/commit/f494b8430f9097fc70446d6949c8a42a27518e0b"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Automattic/mongoose"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Automattic/mongoose/releases/tag/6.13.10"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Automattic/mongoose/releases/tag/7.8.10"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Automattic/mongoose/releases/tag/8.24.1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Automattic/mongoose/releases/tag/9.7.2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Mongoose: Prototype pollution in mongoose update casting via __proto__-prefixed dotted path (Schema._getSchema/path getter)"
}

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.

Action not permitted

CVE-2026-73562 (GCVE-0-2026-73562)

bit-mongoose-2026-73562

Vulnerability from bitnami_vulndb

FKIE_CVE-2026-73562

GHSA-664H-WQGQ-64GW

Impact

Patches

Workarounds

References

Tags

Sightings

Nomenclature