# CVE-2021-31830: Cross site Scripting (XSS) vulnerability in McAfee DBSec

> An administrator can inject JavaScript into database names, leading to XSS when other users view the configuration page.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 3 Jun 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-xr2m-8rhq-x323

## What is CVE-2021-31830?

CVE-2021-31830 is a medium-severity cross-site scripting vulnerability in McAfee,LLC McAfee Database Security (DBSec), published on 3 Jun 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in McAfee Database Security (DBSec) prior to 4.8.2 allows an administrator to embed JavaScript code when configuring the name of a database to be monitored. This would be triggered when any authorized user logs into the DBSec interface and opens the properties configuration page for this database.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2021-31830?

It affects 1 product.


Products: Mcafee Database Security.

## How do I fix CVE-2021-31830?

No fix has been published for CVE-2021-31830 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-31830 being exploited?

There is no known exploitation of CVE-2021-31830 in the wild and no public exploit code.

## Other vulnerabilities in McAfee,LLC McAfee Database Security (DBSec)

- [CVE-2021-23894](https://insights.sbomify.com/CVE-2021-23894/): Unauthorized deserialization of untrusted data in McAfee DBSec (critical 9.6)
- [CVE-2021-23895](https://insights.sbomify.com/CVE-2021-23895/): Authorized deserialization of untrusted data in McAfee DBSec (critical 9.0)
- [CVE-2020-7339](https://insights.sbomify.com/CVE-2020-7339/): Database Security(DBS)-Use of a Broken or Risky Cryptographic Algorithm (medium 6.3)
- [CVE-2021-31850](https://insights.sbomify.com/CVE-2021-31850/): Denial of Service in Database Security on Windows (medium 6.1)
- [CVE-2019-3615](https://insights.sbomify.com/CVE-2019-3615/): Data Leakage Vulnerability in McAfee Database Security web interface (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-31830 and fix it if it is affected.

What it is: CVE-2021-31830 is a medium-severity cross-site scripting vulnerability in McAfee,LLC McAfee Database Security (DBSec), published on 3 Jun 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-31830 in the wild and no public exploit code.

Affected product: McAfee,LLC McAfee Database Security (DBSec). 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-2021-31830/ (Markdown: https://insights.sbomify.com/CVE-2021-31830/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-31830
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-31830
- OSV: https://osv.dev/vulnerability/CVE-2021-31830

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-31830/
Summaries are generated and may contain mistakes; the official description above is the record.