Path Traversal in Fedml-Ai Fedml

CVE-2026-5535

A security flaw has been discovered in FedML-AI FedML up to 0.8.9. This impacts an unknown function of the file FileUtils.java of the component MQTT Message Handler. Performing a manipulation of the argument dataSet results in path traversal. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.005 (41.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Weakness classification (CWE)

References

  • cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
  • cna@vuldb.com (signature, Permissions Required, permissions-required)
  • cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
  • cna@vuldb.com (issue-tracking, Exploit, Third Party Advisory, exploit, Mitigation)

Frequently asked questions

What is CVE-2026-5535?
CVE-2026-5535 is a medium-severity vulnerability in Fedml-Ai Fedml, classified under Path Traversal. CVSS score: 4.3/10. Published 2026-04-05.
How severe is CVE-2026-5535?
Medium severity. CVSS v3 base score is 4.3 out of 10.