CVE-2026-90871 — MEDIUM (5.3)

Vulnerability Description

Improper limitation of a pathname to a restricted directory in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow an unauthenticated attacker to affect files outside the intended directory.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Related Weaknesses (CWE)

CWE-73 CWE-22

References

https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86I

FAQ

What is CVE-2026-90871?

CVE-2026-90871 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Improper limitation of a pathname to a restricted directory in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow an unauthenticated attacker to affect file...

How severe is CVE-2026-90871?

CVE-2026-90871 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-90871?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.