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CVE-2026-90871VulnerabilityPublished

Improper limitation of a pathname to a restricted directory in Progress Software WS_FTP Server versions prior to

Source GCVE Database

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Authoritative record:CVE-2026-90871· Medium 5.3

Not known to be exploited · CVSS 5.3 Medium : upgrade to 2025.0.4 or 2024.0.7 when convenient.

Data as of 29 Oct 2026, 19:15 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (ProgressSoftware)CVSS 3.15.3
Patch
Available – fixed in 2025.0.4, 2024.0.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade WS_FTP Server to 2025.0.4 or 2024.0.7.

Affected software

ProductAffectedFixed in
Progress SoftwareWS_FTP ServerAffected
  • <2025.0.4
Fixed in
  • 2025.0.4
Progress SoftwareWS_FTP ServerAffected
  • <2024.0.7
Fixed in
  • 2024.0.7

AI-suggested

A fix is available in WS_FTP Server versions 2024.0.7 and 2025.0.4. Users should upgrade to these or later versions to remediate the vulnerability. No additional mitigation guidance is provided in the available data.

Description

CVE-2026-90871 is a directory traversal vulnerability in Progress Software WS_FTP Server on Windows versions prior to 2024.0.7 and 2025.0.4. It allows an unauthenticated attacker to access or modify files outside the intended restricted directory.

References

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