# CVE-2026-93759: Server-side JavaScript injection via string query criteria bypassing the strict operator allowlist

> CVE-2026-93759: Server-side JavaScript injection via string query criteria bypassing the strict operator allowlist. CVSS 8.6 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-93759
Last updated: 2026-09-24T16:19:37Z

- Published: 2026-09-18 17:27 UTC · Updated: 2026-09-24 16:19 UTC · Assigner: mongodb
- CVSS: 8.6 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
- EPSS: 0.43%, 37th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-94

## Description

Mongoid does not neutralize a string-typed query criterion supplied to its query builder, and instead passes it to the database as a server-side JavaScript expression. An unauthenticated party able to influence the value an application supplies as a query argument may cause code of their choosing to be evaluated by the database engine. This may result in unintended disclosure of stored field values, unintended selection of documents for application-initiated writes, and reduced database performance.

## Affected vendors and products

- MongoDB Inc.: Mongoid

## Tracked companies

- [MongoDB Atlas](https://rewindex.com/company/mongodb-atlas.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-93759)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-93759)
- [https://jira.mongodb.org/browse/MONGOID-5993](https://jira.mongodb.org/browse/MONGOID-5993)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-93759 · Markdown: https://rewindex.com/cve/CVE-2026-93759.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-93759 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:11:14.596Z