Is CVE-2026-90862 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-90862 being exploited in the wild.

How severe is CVE-2026-90862?

Medium severity, with a CVSS score of 4.3, published 29 October 2026.

Which products and versions are affected?

Progress Software WS FTP Server prior to 2024.0.7 and 2025.0.4.

Is there a fix for CVE-2026-90862?

Yes: fixed in WS_FTP Server 2024.0.7, 2025.0.4. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-90862 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-90862?

Check whether you run Progress Software 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.

CVE-2026-90862: Progress Software WS_FTP Server multi-factor authentication bypass

CVE-2026-90862 · Severity: medium · CVSS 4.3 · Published 2026-10-29

Progress WS_FTP Server is a file transfer application used to securely move files across networks. An authentication flaw in its web transfer module allows attackers with valid user credentials to bypass multi-factor authentication (MFA) and access files without completing the second authentication factor. This could expose sensitive files to unauthorized access even when MFA is configured.

Technologies: Progress Software WS FTP Server. Vendors: Progress Software.

Quick answers

Is CVE-2026-90862 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-90862 being exploited in the wild.
How severe is CVE-2026-90862?: Medium severity, with a CVSS score of 4.3, published 29 October 2026.
Which products and versions are affected?: Progress Software WS FTP Server prior to 2024.0.7 and 2025.0.4.
Is there a fix for CVE-2026-90862?: Yes: fixed in WS_FTP Server 2024.0.7, 2025.0.4. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-90862 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-90862?: Check whether you run Progress Software 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: WS_FTP Server 2024.0.7, 2025.0.4

Technical details

The Web Transfer Module in WS_FTP Server improperly validates authentication, allowing attackers who possess a user's password to access account files without satisfying MFA requirements. The vulnerability affects versions prior to 2024.0.7 and 2025.0.4 on Windows. A patch is available in the named fixed versions.

Affected products

Progress Software WS_FTP Server prior to 2024.0.7 and 2025.0.4

Timeline

2026-10-29: disclosed

References

https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view

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