# CVE-2026-76797: MongoSQL Transition Readiness Tool Improper Neutralization of Formula Elements in Generated Reports

> An attacker with write privileges can inject formulas into CSV reports, causing data disclosure or code execution when an operator opens the file in a spreadsheet.

- **Severity:** Medium 5.8 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 28 Aug 2026
- **Updated:** 31 Aug 2026
- **Also known as:** GHSA-9hwm-625v-gg7j

## What is CVE-2026-76797?

CVE-2026-76797 is a medium-severity code injection vulnerability in MongoDB BI Connector Transition Readiness Report, published on 28 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

The MongoSQL Transition Readiness Tool writes database and collection names into its generated CSV reports without neutralizing leading characters that spreadsheet applications treat as formulas. A user with write privileges on the cluster can choose a namespace name that is later evaluated as a formula when an operator opens the generated report in a spreadsheet application, which may result in unintended disclosure of report contents or execution of external content on the operator's workstation. Generating a report for the affected namespace and opening it in a spreadsheet application is required.

Weakness: CWE-1236 (Improper Neutralization of Formula Elements in a CSV File)

## Which versions are affected by CVE-2026-76797?

It affects 1 product.


Products: Mongodb Mongosql Transition Readiness Tool.

## How do I fix CVE-2026-76797?

No fix has been published for CVE-2026-76797 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-76797 being exploited?

There is no known exploitation of CVE-2026-76797 in the wild and no public exploit code.

## Other vulnerabilities in MongoDB BI Connector Transition Readiness Report

- [CVE-2026-76798](https://insights.sbomify.com/CVE-2026-76798/): MongoSQL Transition Readiness Tool Improper Output Encoding in Generated HTML Reports (medium 6.9)
- [CVE-2026-76794](https://insights.sbomify.com/CVE-2026-76794/): MongoDB BI Connector Transition Readiness Report Improper HTML Encoding When Processing Database Metadata (medium 4.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-76797 and fix it if it is affected.

What it is: CVE-2026-76797 is a medium-severity code injection vulnerability in MongoDB BI Connector Transition Readiness Report, published on 28 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-76797 in the wild and no public exploit code.

Affected product: MongoDB BI Connector Transition Readiness Report. 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-2026-76797/ (Markdown: https://insights.sbomify.com/CVE-2026-76797/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-76797
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-76797
- OSV: https://osv.dev/vulnerability/CVE-2026-76797

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-76797/
Summaries are generated and may contain mistakes; the official description above is the record.