CVE-2026-115338 PUBLISHED

Insecure XFT Transport in Progress WS_FTP Server

Assigner: ProgressSoftware
Reserved: 22.10.2026 Published: 09.11.2026 Updated: 10.11.2026

Insufficient protection of communications in Progress WS_FTP Server versions prior to 2025.0.5 could allow a network attacker to intercept sensitive information or modify requests when unencrypted connections are used.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 8.1

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Progress Software
Product	WS_FTP Server
Versions	Default: unaffected affected from 0 to 2025.0.5 (excl.)

Workarounds

Disable HTTP access to the XFT service and configure clients to use HTTPS only. Invalidate active sessions and rotate credentials known to have been transmitted over HTTP.

References

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

Problem Types

CWE-319: Cleartext Transmission of Sensitive Information CWE
CWE-345: Insufficient Verification of Data Authenticity CWE

Impacts

Adversary in the Middle (AiTM) - an attacker on an HTTP connection can capture credentials or alter requests