Hi,

The following vulnerability was published for undertow.

CVE-2026-114370[0]:
| A flaw was found in the PathResourceManager component of the
| Undertow web server. This component is responsible for serving
| static files from the file system. The issue occurs because the
| mechanism used to verify if a symbolic link points to a safe
| location only checks if the target path starts with a specific
| string, without ensuring it matches a full directory name. This
| could allow an attacker to access files in a sibling directory if
| that directorys name starts with the same characters as an
| authorized safe directory.

https://bugzilla.redhat.com/show_bug.cgi?id=2528757


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-114370
https://www.cve.org/CVERecord?id=CVE-2026-114370

Please adjust the affected versions in the BTS as needed.