# CVE-2023-31621: SQL injection in n/a

> Attackers can cause a Denial of Service in Virtuoso database via crafted SQL statements in the kc_var_col component.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 15 May 2023
- **Updated:** 24 Jan 2025
- **Also known as:** DEBIAN-CVE-2023-31621, GHSA-gm8r-g6c3-j2j8, UBUNTU-CVE-2023-31621

## What is CVE-2023-31621?

CVE-2023-31621 is a high-severity SQL injection vulnerability in Openlinksw Virtuoso, published on 15 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue in the kc_var_col component of openlink virtuoso-opensource v7.2.9 allows attackers to cause a Denial of Service (DoS) via crafted SQL statements.

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command)

## Which versions are affected by CVE-2023-31621?

It affects 1 product.


Products: Openlinksw Virtuoso.

## How do I fix CVE-2023-31621?

Apply the vendor's patch.

## Is CVE-2023-31621 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-31621 exists.

## Other vulnerabilities in Openlinksw Virtuoso

- [CVE-2023-48951](https://insights.sbomify.com/CVE-2023-48951/): Denial of service in n/a (high 8.8)
- [CVE-2024-57635](https://insights.sbomify.com/CVE-2024-57635/): SQL injection in n/a (high 7.5)
- [CVE-2024-57636](https://insights.sbomify.com/CVE-2024-57636/): SQL injection in n/a (high 7.5)
- [CVE-2024-57637](https://insights.sbomify.com/CVE-2024-57637/): SQL injection in n/a (high 7.5)
- [CVE-2024-57638](https://insights.sbomify.com/CVE-2024-57638/): SQL injection in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-31621 and fix it if it is affected.

What it is: CVE-2023-31621 is a high-severity SQL injection vulnerability in Openlinksw Virtuoso, published on 15 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-31621 exists.

Affected product: Openlinksw Virtuoso. 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-2023-31621/ (Markdown: https://insights.sbomify.com/CVE-2023-31621/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-31621
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-31621
- OSV: https://osv.dev/vulnerability/CVE-2023-31621

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-31621/
Summaries are generated and may contain mistakes; the official description above is the record.