CVE-2026-114370 Undertow: undertow: pathresourcemanager safepaths check allows sibling-directory symlink traversal
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-114370?
CVE-2026-114370 is a low-severity vulnerability in Red Hat Enterprise Linux 8, published on 21 Oct 2026.
Official description
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.
Weakness: CWE-22
Which versions are affected by CVE-2026-114370?
How do I fix CVE-2026-114370?
No fix has been published for CVE-2026-114370 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-114370 being exploited?
There is no known exploitation of CVE-2026-114370 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-114370, GHSA-fg56-q742-gmvf, UBUNTU-CVE-2026-114370.