# CVE-2026-90861: Progress Software WS_FTP Server password exposure to administrators

Source: https://junglewise.ai/threats/cve-2026-90861-progress-software-ws-ftp-server-versions-prior-to-2024-0-7-and  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-29. Updated: 2026-10-29  
License: CC BY 4.0 with a link back

CVE-2026-90861 · Severity: medium · CVSS 6.6 · Published 2026-10-29

Progress WS_FTP Server is a file transfer server for Windows that allows secure file exchange. A vulnerability in affected versions allows one administrator to view other users' passwords in clear text, potentially enabling them to gain unauthorized broader access to the server and its data.

Technologies: [Progress Software WS FTP Server](https://junglewise.ai/threats/technologies/progress-software-ws-ftp-server). Vendors: [Progress Software](https://junglewise.ai/threats/vendors/progress-software).

## Quick answers

**Is CVE-2026-90861 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-90861 being exploited in the wild.

**How severe is CVE-2026-90861?** Medium severity, with a CVSS score of 6.6, published 29 October 2026.

**Which products and versions are affected?** Progress Software WS FTP Server prior to 2024.0.7 and 2025.0.4 on Windows.

**Is there a fix for CVE-2026-90861?** Yes: fixed in WS_FTP Server 2024.0.7, 2025.0.4. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-90861 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-90861?** Check whether you run Progress Software WS FTP Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in WS_FTP Server 2024.0.7, 2025.0.4

## Technical details

WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows fail to properly protect stored user passwords, allowing authenticated administrators to view credentials in clear text. This is an information disclosure vulnerability that requires administrative access to exploit but could lead to privilege escalation and lateral movement within the server environment.

## Affected products

- Progress Software WS_FTP Server prior to 2024.0.7 and 2025.0.4 on Windows

## Timeline

- 2026-10-29: disclosed

## References

- [https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view](https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view)

## Related threats

- [Progress Software WS_FTP Server access restriction bypass in Thin Client Web Transfer](https://junglewise.ai/threats/cve-2026-115341-improper-access-restrictions-in-the-thin-client-web-transfer)
- [Progress Software WS_FTP Server sensitive data exposure in temp file](https://junglewise.ai/threats/cve-2026-115340-progress-software-ws-ftp-server-versions-prior-to-2025-0-5-on)
- [Progress Software WS_FTP Server denial of service via insufficient resource limits](https://junglewise.ai/threats/cve-2026-115339-insufficient-resource-limits-in-progress-software-ws-ftp-server)
- [Progress WS_FTP Server incorrect quota accounting](https://junglewise.ai/threats/cve-2026-115336-incorrect-quota-accounting-in-progress-software-ws-ftp-server)
- [Progress Software WS_FTP Server code injection in Manager web console](https://junglewise.ai/threats/cve-2026-90872-improper-neutralization-of-directives-in-dynamically-evaluated)