# CVE-2026-114648: NoSQL injection via dot and dollar characters in LINQ filter field names and dictionary keys

> CVE-2026-114648: NoSQL injection via dot and dollar characters in LINQ filter field names and dictionary keys. CVSS 7.6 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-114648
Last updated: 2026-10-23T19:45:03Z

- Published: 2026-10-22 19:13 UTC · Updated: 2026-10-23 19:45 UTC · Assigner: mongodb
- CVSS: 7.6 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
- EPSS: 0.32%, 25th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-943

## Description

The MongoDB C\# Driver does not neutralize dot and dollar characters in dictionary keys, field names and array-filter identifiers used in LINQ queries before placing them into the field paths it sends to the server. An application user whose input reaches these positions can redirect a query or update to fields the application did not name, which can expose other users' documents and widen updates beyond the intended data. Certain values can also write malformed fields that leave stored documents unreadable by the application until they are repaired.

## Affected vendors and products

- MongoDB: C\# Driver

## Tracked companies

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

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-114648)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-114648)
- [https://github.com/mongodb/mongo-csharp-driver/releases/tag/v3.13.0](https://github.com/mongodb/mongo-csharp-driver/releases/tag/v3.13.0)
- [https://github.com/mongodb/mongo-csharp-driver/security/advisories/GHSA-2xqr-fxmx-2cmf](https://github.com/mongodb/mongo-csharp-driver/security/advisories/GHSA-2xqr-fxmx-2cmf)
- [https://jira.mongodb.org/browse/CSHARP-6181](https://jira.mongodb.org/browse/CSHARP-6181)

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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-2026-114648 · Markdown: https://rewindex.com/cve/CVE-2026-114648.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-114648 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:13:37.079Z