CVE-2026-125118
Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Prior to 6.13.12, 7.8.13, 8.24.7, and 9.11.4, Schema.prototype.virtual() builds nested virtual paths without applying the special-property validation already used by Schema.path() and Schema.add(). An attacker who can influence virtual field names in dynamic schemas, content-management form builders, or schema-as-code systems can supply path segments such as __proto__, constructor, or prototype, causing the virtual-path reducer to write enumerable properties to Object.prototype or Function.prototype. The resulting prototype pollution can spoof inherited property checks such as authorization flags and can provide function-prototype gadget state to other server-side JavaScript code. This issue is fixed in versions 6.13.12, 7.8.13, 8.24.7, and 9.11.4.
Executive briefing
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Evidence confidence: Not assessed Evidence-derived, not an exploitability verdict
Severity & attack characteristics
CVSS vector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Technical explanation & impact
Technical root-cause details are not available in the current source record.
Assess the impact using the published CVSS metrics and the affected vendor component.
Affected products and versions
NVD has not supplied machine-readable vulnerable CPE product/version entries for this CVE. This is an information gap, not proof that no products are affected. Check the vendor advisory references below.
Remediation & validation
- Identify exposure by comparing the affected product and version ranges with your asset inventory, SBOM and externally exposed services.
- Review the linked vendor security advisory or patch notes. Upgrade to a vendor-confirmed fixed release; do not infer a fixed version from the CVE description.
- Until patched, consider restricting network access or disabling the affected feature where operationally safe. These are temporary controls, not a substitute for a vendor fix.
- Validate the remediation with a version check and vulnerability rescan, then retain change evidence.
No fixed version is displayed unless it is explicitly established by a vendor advisory. Follow the vendor's release notes for exact product and branch applicability.
Vendor advisories, patches & exploit references
- https://github.com/Automattic/mongoose/commit/318f7e09dd363a1dfddb8180878488dccd2796d1 VENDOR security-advisories@github.com
- https://github.com/Automattic/mongoose/commit/74df7769b5a8d89c4413b764029911ee915ea467 VENDOR security-advisories@github.com
- https://github.com/Automattic/mongoose/commit/7a2a6567abbb72c0430c8cc5b7942141844fecff VENDOR security-advisories@github.com
- https://github.com/Automattic/mongoose/commit/fb467e6d33174293dc0360649f20ce68d99117a9 VENDOR security-advisories@github.com
- https://github.com/Automattic/mongoose/releases/tag/6.13.12 VENDOR security-advisories@github.com
- https://github.com/Automattic/mongoose/releases/tag/7.8.13 VENDOR security-advisories@github.com
- https://github.com/Automattic/mongoose/releases/tag/8.24.7 VENDOR security-advisories@github.com
- https://github.com/Automattic/mongoose/releases/tag/9.11.4 VENDOR security-advisories@github.com
- https://github.com/Automattic/mongoose/security/advisories/GHSA-6972-9mcm-vhwj VENDOR security-advisories@github.com