# CVE-2026-92757: Malformed connection string may disable field level encryption

> Malformed connection strings in MongoDB Entity Framework Core Provider can inadvertently disable field level encryption, exposing sensitive data.

- **Severity:** Medium 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`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Sep 2026
- **Updated:** 17 Sep 2026
- **Also known as:** GHSA-r5h6-p8wg-h467

## What is CVE-2026-92757?

CVE-2026-92757 is a medium-severity vulnerability in MongoDB Entity Framework Core Provider, published on 17 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Applications built on MongoDB Entity Framework Core Provider which place a database name in the connection string may inadvertently disable field level encryption.

Weakness: CWE-311 (Missing Encryption of Sensitive Data)

## Which versions are affected by CVE-2026-92757?

It affects 1 product.


Products: Mongodb Entity Framework Core Provider.

## How do I fix CVE-2026-92757?

No fix has been published for CVE-2026-92757 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-92757 being exploited?

There is no known exploitation of CVE-2026-92757 in the wild and no public exploit code.

## Other vulnerabilities in MongoDB Entity Framework Core Provider

- [CVE-2026-92756](https://insights.sbomify.com/CVE-2026-92756/): Combining encryption settings may disable encryption (medium 6.8)
- [CVE-2026-92758](https://insights.sbomify.com/CVE-2026-92758/): Logs may collect sensitive information (medium 5.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-92757 and fix it if it is affected.

What it is: CVE-2026-92757 is a medium-severity vulnerability in MongoDB Entity Framework Core Provider, published on 17 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-92757 in the wild and no public exploit code.

Affected product: MongoDB Entity Framework Core Provider. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-92757/ (Markdown: https://insights.sbomify.com/CVE-2026-92757/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-92757
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-92757
- OSV: https://osv.dev/vulnerability/CVE-2026-92757

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-92757/
Summaries are generated and may contain mistakes; the official description above is the record.