Quick answers
- Is CVE-2026-115336 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-115336 being exploited in the wild.
- How severe is CVE-2026-115336?
- Medium severity, with a CVSS score of 6.5, published 9 November 2026.
- Which products and versions are affected?
- Progress Software WS FTP Server prior to 2025.0.5 on Windows.
- Is there a fix for CVE-2026-115336?
- Yes: fixed in WS_FTP Server 2025.0.5. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-115336 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-115336?
- 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 2025.0.5
Technical details
A quota accounting logic flaw in WS_FTP Server allows authenticated users with upload and delete permissions to exceed configured storage quotas. The vulnerability requires valid credentials and active user permissions but no other preconditions; an attacker can exploit this to exhaust disk space and trigger denial of service. A fix is available in version 2025.0.5 and later.
Affected products
- Progress Software WS_FTP Server prior to 2025.0.5 on Windows
Timeline
- 2026-11-09: disclosed