# CVE-2026-81530

## Summary

- **CVE ID:** CVE-2026-81530
- **Severity:** MEDIUM
- **CVSS Score:** 6.8 (CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N)
- **CWE:** CWE-532
- **Published:** Aug 27, 2026
- **Last Modified:** Aug 28, 2026

## Description

A weakness in the client-side encryption configuration surface of the MongoDB C# Driver causes sensitive key-management credential material supplied by the application to be reproduced verbatim in the driver's human-readable diagnostic representation of its client settings, instead of being masked as other secret fields are. A party able to read the application's logs, diagnostic output, or a process memory dump may thereby recover the plaintext credentials and use them to decrypt protected field data.

## Affected Products

- MongoDB — C# Driver (2.10.0)

## References

- [CNA](https://www.nuget.org/packages/MongoDB.Driver/3.11.1)
- [CNA](https://jira.mongodb.org/browse/CSHARP-6164)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.07%
- **EPSS Percentile:** 0.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._