CVE-2021-32769: Objectcomputing Micronaut

High severity, CVSS 7.5. EPSS: 1.7% chance of exploitation in the next 30 days.

Micronaut is a JVM-based, full stack Java framework designed for building JVM applications. A path traversal vulnerability exists in versions prior to 2.5.9. With a basic configuration, it is possible to access any file from a filesystem, using "/../../" in the URL. This occurs because Micronaut does not restrict file access to configured paths. The vulnerability is patched in version 2.5.9. As a workaround, do not use `**` in mapping, use only `*`, which exposes only flat structure of a directory not allowing traversal. If using Linux, another workaround is to run micronaut in chroot.

Affected products

• Objectcomputing Micronaut: before 2.5.9 (fixed in 2.5.9)

Published 2021-07-16. Last modified 2026-06-17.