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    "cveMetadata": {
        "cveId": "CVE-2026-114647",
        "assignerOrgId": "a39b4221-9bd0-4244-95fc-f3e2e07f1deb",
        "state": "PUBLISHED",
        "assignerShortName": "mongodb",
        "dateReserved": "2026-10-21T21:57:44.493Z",
        "datePublished": "2026-10-22T19:13:51.972Z",
        "dateUpdated": "2026-10-22T21:25:33.454Z"
    },
    "containers": {
        "cna": {
            "title": "NoSQL operator injection via unvalidated replacement document in findOneAndReplace",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-943",
                            "description": "CWE-943: Improper Neutralization of Special Elements in Data Query Logic",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "MongoDB",
                    "product": "C# Driver",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "2.13.0",
                            "lessThan": "3.13.0",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "The MongoDB C# Driver does not reject replacement documents whose top-level field names begin with a dollar sign in FindOneAndReplace, unlike other replace operations. An application that builds such a document from user-supplied field names can have the server apply update operators instead of a full replacement. The effect is limited to the document matched by the application's own filter, whose contents can be modified in ways the application did not intend.",
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                            "value": "The MongoDB C# Driver does not reject replacement documents whose top-level field names begin with a dollar sign in FindOneAndReplace, unlike other replace operations. An application that builds such a document from user-supplied field names can have the server apply update operators instead of a full replacement. The effect is limited to the document matched by the application's own filter, whose contents can be modified in ways the application did not intend."
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://jira.mongodb.org/browse/CSHARP-6186"
                },
                {
                    "url": "https://github.com/mongodb/mongo-csharp-driver/releases/tag/v3.13.0"
                },
                {
                    "url": "https://github.com/mongodb/mongo-csharp-driver/security/advisories/GHSA-68cj-624m-mxj3"
                }
            ],
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                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "LOW",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "exploitMaturity": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "valueDensity": "NOT_DEFINED",
                        "vulnerabilityResponseEffort": "NOT_DEFINED",
                        "providerUrgency": "NOT_DEFINED",
                        "version": "4.0",
                        "baseSeverity": "MEDIUM",
                        "baseScore": 5.3,
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
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                        "version": "3.1",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "LOW",
                        "availabilityImpact": "NONE",
                        "baseSeverity": "MEDIUM",
                        "baseScore": 4.3,
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
                    }
                }
            ],
            "source": {
                "discovery": "INTERNAL"
            },
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            "providerMetadata": {
                "orgId": "a39b4221-9bd0-4244-95fc-f3e2e07f1deb",
                "shortName": "mongodb",
                "dateUpdated": "2026-10-22T21:25:33.454Z"
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