What’s Vulnerable › Vulnerabilities

CVE-2026-5535: FedML-AI FedML MQTT Message FileUtils.java path traversal

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-05 · updated 2026-07-24
• Weakness: CWE-22

Description

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.

Affected products

• FedML-AI FedML: before 0.8.9 — fixed in 0.8.9

How to fix

Upgrade to a fixed version: FedML-AI FedML 0.8.9. Check the vendor advisory for mitigations.

References

• https://github.com/AnalogyC0de/public_exp/issues/25
• https://vuldb.com/submit/782200
• https://vuldb.com/vuln/355288
• https://vuldb.com/vuln/355288/cti

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