CVE-2026-120673

Rust Driver 3.9.1 exports CSFLE plaintext in `db.query.text` before encrypting the command

Published Nov 3, 2026 CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

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History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Mongodb
Mongodb rust Driver
Vendors & Products Mongodb
Mongodb rust Driver
Type Values Removed Values Added
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.
Title Rust Driver 3.9.1 exports CSFLE plaintext in `db.query.text` before encrypting the command
Weaknesses CWE-532
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mongodb
Published
Updated
Nov 3, 2026, 8:12 PM
Reserved
Nov 2, 2026, 7:02 PM
Status
Awaiting Analysis
Published
Nov 3, 2026, 7:17 PM
Modified
Nov 3, 2026, 9:17 PM
Severity
Moderate
Public date
Nov 3, 2026, 6:33 PM