# CVE-2026-115337: Progress WS_FTP Server access control bypass

Source: https://junglewise.ai/threats/cve-2026-115337-improper-access-control-in-progress-ws-ftp-server-versions-prior  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-09. Updated: 2026-11-09  
License: CC BY 4.0 with a link back

CVE-2026-115337 · Severity: medium · CVSS 6.3 · Published 2026-11-09

Progress WS_FTP Server is a secure file transfer platform used by enterprises to manage data exchanges. An authenticated user with folder-management permissions could bypass access restrictions to view or modify files belonging to other users, potentially exposing sensitive business data or enabling unauthorized modifications.

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

## Quick answers

**Is CVE-2026-115337 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-115337 being exploited in the wild.

**How severe is CVE-2026-115337?** Medium severity, with a CVSS score of 6.3, published 9 November 2026.

**Which products and versions are affected?** Progress WS FTP Server prior to 2025.0.5.

**Is there a fix for CVE-2026-115337?** Yes: fixed in 2025.0.5. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-115337 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-115337?** Check whether you run Progress 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 2025.0.5

## Technical details

The vulnerability is an improper access control flaw affecting WS_FTP Server versions prior to 2025.0.5, exploitable by authenticated users holding certain folder-management permissions. An attacker with these permissions can circumvent authorization checks to access or modify files outside their assigned scope. The attack requires existing authentication and appropriate role assignment.

## Affected products

- Progress WS_FTP Server prior to 2025.0.5

## Timeline

- 2026-11-09: disclosed

## References

- [https://community.progress.com/s/article/WS-FTP-Server-Service-Pack-November-2026](https://community.progress.com/s/article/WS-FTP-Server-Service-Pack-November-2026)

## Related threats

- [Progress WS_FTP Server insufficient encryption in communications](https://junglewise.ai/threats/cve-2026-115338-insufficient-protection-of-communications-in-progress-ws-ftp)
- [Progress WS_FTP Server Deserialization of Untrusted Data Vulnerability](https://junglewise.ai/threats/cve-2023-40044-progress-ws-ftp-server-deserialization-of-untrusted-data)