# CVE-2023-37879: Exposed Session Variable in Wing FTP Server <= 7.2.0

> An attacker can elicit sensitive information due to insecure storage of session variables in the Wing FTP Server web client.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 12 Sep 2023
- **Updated:** 24 Sep 2024
- **Also known as:** GHSA-gh7h-r3ff-2vq6

## What is CVE-2023-37879?

CVE-2023-37879 is a medium-severity vulnerability in Wing FTP Server, published on 12 Sep 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Insecure storage of sensitive information in Wing FTP Server (User Web Client) allows information elicitation.This issue affects Wing FTP Server: <= 7.2.0.

Weakness: CWE-922 (Insecure Storage of Sensitive Information)

## Which versions are affected by CVE-2023-37879?

It affects 1 product.


Products: Wftpserver Wing Ftp Server.

## How do I fix CVE-2023-37879?

No fix has been published for CVE-2023-37879 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-37879 being exploited?

There is no known exploitation of CVE-2023-37879 in the wild and no public exploit code.

## Other vulnerabilities in Wing FTP Server

- [CVE-2025-47812](https://insights.sbomify.com/CVE-2025-47812/): Wing FTP Server Improper Neutralization of Null Byte or NUL Character (critical 10.0, exploited in the wild)
- [CVE-2025-47813](https://insights.sbomify.com/CVE-2025-47813/): Wing FTP Server Information Disclosure (medium 4.3, exploited in the wild)
- [CVE-2026-44403](https://insights.sbomify.com/CVE-2026-44403/): Wing FTP Server < 8.1.3 Authenticated Remote Code Execution via Session Serialization (high 8.6)
- [CVE-2020-37032](https://insights.sbomify.com/CVE-2020-37032/): Wing FTP Server 6.3.8 - Remote Code Execution (high 8.6)
- [CVE-2019-25267](https://insights.sbomify.com/CVE-2019-25267/): Wing FTP Server 6.0.7 - Unquoted Service Path (high 8.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-37879 and fix it if it is affected.

What it is: CVE-2023-37879 is a medium-severity vulnerability in Wing FTP Server, published on 12 Sep 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-37879 in the wild and no public exploit code.

Affected product: Wing FTP Server. 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-2023-37879/ (Markdown: https://insights.sbomify.com/CVE-2023-37879/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-37879
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-37879
- OSV: https://osv.dev/vulnerability/CVE-2023-37879

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-37879/
Summaries are generated and may contain mistakes; the official description above is the record.