CVE-2026-120673: MongoDB Rust Driver · Sensitive Data in Logs
Affects MongoDB Rust DriverSource CVE Database V5
Not known to be exploited · CVSS 6.8 Medium : upgrade to 3.9.1 when convenient.
Data as of 3 Nov 2026, 18:43 UTC
Thin evidence
One scorer or none| CNA (mongodb) | CVSS 4.0 | 6.8 |
|---|---|---|
| CNA (mongodb) | CVSS 3.1 | 5.5 |
- Patch
- Available – fixed in 3.9.1
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 3 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.
What to do
Upgrade MongoDB Rust Driver to 3.9.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| MongoDBRust Driver | Affected
| Fixed in
|
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.