# CVE-2026-65939: WhatsUp Gold versions prior to 26.0.2 contain an arbitrary file write vulnerability in the LogToFile action handler.

> A privileged attacker can write arbitrary files to the web root via the LogToFile action, potentially leading to code execution.

- **Severity:** Medium 6.8 (`CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Aug 2026
- **Updated:** 13 Aug 2026
- **Also known as:** GHSA-j337-6rqp-7m54

## What is CVE-2026-65939?

CVE-2026-65939 is a medium-severity vulnerability in Progress Whatsup Gold, published on 12 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In WhatsUp Gold versions released before 2026.0.2, a privileged attacker can create a LogToFile action specifying an arbitrary file extension within the IIS web root.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type), CWE-73 (External Control of File Name or Path), CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-65939?

It affects 1 product.


Products: Progress Whatsup Gold.

## How do I fix CVE-2026-65939?

No fix has been published for CVE-2026-65939 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-65939 being exploited?

There is no known exploitation of CVE-2026-65939 in the wild and no public exploit code.

## Other vulnerabilities in Progress Whatsup Gold

- [CVE-2024-6670](https://insights.sbomify.com/CVE-2024-6670/): Progress WhatsUp Gold SQL Injection (critical 9.8, exploited in the wild)
- [CVE-2024-4885](https://insights.sbomify.com/CVE-2024-4885/): Progress WhatsUp Gold Path Traversal (critical 9.8, exploited in the wild)
- [CVE-2024-46909](https://insights.sbomify.com/CVE-2024-46909/): WhatsUp Gold WriteDataFile Directory Traversal Remote Code Execution Vulnerability (critical 9.8)
- [CVE-2024-8785](https://insights.sbomify.com/CVE-2024-8785/): WhatsUp Gold Registry Overwrite Remote Code Execution Vulnerability (critical 9.8)
- [CVE-2024-7763](https://insights.sbomify.com/CVE-2024-7763/): WhatsUp Gold getReport Missing Authentication Authentication Bypass Vulnerability (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-65939 and fix it if it is affected.

What it is: CVE-2026-65939 is a medium-severity vulnerability in Progress Whatsup Gold, published on 12 Aug 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-2026-65939 in the wild and no public exploit code.

Affected product: Progress Whatsup Gold. 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-2026-65939/ (Markdown: https://insights.sbomify.com/CVE-2026-65939/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-65939
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-65939
- OSV: https://osv.dev/vulnerability/CVE-2026-65939

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-65939/
Summaries are generated and may contain mistakes; the official description above is the record.