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CVE-2026-93758

Cross-principal document update, theft, and deletion via unvalidated id in nested attributes

CVSS 4.0 8.6 HIGHCVSS 3.1 8.1 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-93758

Published

An insecure direct object reference in the nested attributes handling of the Mongoid object-document mapper may allow a user with basic application privileges to reference a record identifier that is not their own. Processing such a request can cause that record to be looked up without the usual ownership or scoping restrictions, then updated and linked to the requesting user's own record. This may result in unintended disclosure and unauthorized modification of data belonging to other users of the application.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-93758

Published

Mongoid

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "MongoDB Inc.",
                    "product": "Mongoid",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "9.1.0",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "9.0.0",
                            "lessThanOrEqual": "9.0.11",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "8.1.0",
                            "lessThanOrEqual": "8.1.12",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "8.0.0",
                            "lessThanOrEqual": "8.0.12",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON