# CVE-2026-120673: Rust Driver 3.9.1 exports CSFLE plaintext in `db.query.text` before encrypting the command

> CVE-2026-120673: Rust Driver 3.9.1 exports CSFLE plaintext in `db.query.text` before encrypting the command. CVSS 5.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-120673
Last updated: 2026-11-03T21:17:03Z

- Published: 2026-11-03 18:33 UTC · Updated: 2026-11-03 21:17 UTC · Assigner: mongodb
- CVSS: 5.5 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS: 0.10%, 1th percentile (scored 2026-11-04)
- CISA KEV: no
- CWE: CWE-532

## Description

A component of the MongoDB Rust Driver that records diagnostic tracing data can capture command content before automatic client-side field level encryption is applied. In deployments that turn on the optional tracing capability together with automatic in-use encryption, a party with read access to the application's exported trace data may obtain field values that the application designated for encryption, without access to the encryption keys. This may result in unintended disclosure of data.

## Affected vendors and products

- MongoDB: Rust 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-2026-120673)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-120673)
- [https://jira.mongodb.org/browse/RUST-2525](https://jira.mongodb.org/browse/RUST-2525)

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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-2026-120673 · Markdown: https://rewindex.com/cve/CVE-2026-120673.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-120673 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T15:28:16.971Z