CVE-2021-32769

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.

• CWE-22
• CWE-22

• https://github.com/micronaut-projects/micronaut-core/commit/a0cfeb13bf1ef5d692d16d4a3b91b34b7456bb11Patch, Third Party Advisory
• https://github.com/micronaut-projects/micronaut-core/security/advisories/GHSA-cjx7-399x-p2rjExploit, Patch, Third Party Advisory
• https://github.com/micronaut-projects/micronaut-core/commit/a0cfeb13bf1ef5d692d16d4a3b91b34b7456bb11Patch, Third Party Advisory
• https://github.com/micronaut-projects/micronaut-core/security/advisories/GHSA-cjx7-399x-p2rjExploit, Patch, Third Party Advisory

Published

Jul 16, 2021

Last Modified

Jun 17, 2026

Status

Modified

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