Improper Pathname Limitation in Progress Software WS_FTP Server
CVE-2026-90871

5.3MEDIUM

Key Information:

Vendor

Progress Software
Status
Ws Ftp Server
Vendor
CVE Published:
29 October 2026

What is CVE-2026-90871?

An improper limitation of a pathname vulnerability exists in Progress Software WS_FTP Server, allowing unauthenticated attackers to access files outside the designated directory. This oversight can lead to unauthorized file manipulations, potentially compromising sensitive data and system integrity. It is crucial for users of affected versions to implement corrective measures to safeguard against potential threats.

Affected Version(s)

WS_FTP Server Windows 0 < 2024.0.7

WS_FTP Server Windows 0 < 2025.0.4

References

https://progress.lightning.force.com/lightning/r/Knowledg...
vendor-advisory

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Momen Elmady (0xmatrix)
.