---
id: CVE-2026-114370
title: >-
  Undertow: undertow: pathresourcemanager safepaths check allows
  sibling-directory symlink traversal
summary: >-
  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 point…
severity: low
cvss: 3.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-22
vendor: Red Hat
product: undertow-servlet
affected:
  - undertow-servlet (all versions)
  - 'pki-core:10.6/resteasy'
  - 'pki-deps:10.6/resteasy'
  - resteasy
  - undertow-servlet
  - jboss-eap-7/eap74-els-openjdk11-openshift-rhel8 (all versions)
  - jboss-eap-7/eap74-els-openjdk17-openshift-rhel8 (all versions)
  - jboss-eap-7/eap74-els-openjdk8-openshift-rhel8 (all versions)
  - undertow-servlet (all versions)
  - undertow-servlet (all versions)
  - undertow-servlet
  - undertow-servlet (all versions)
published: '2026-10-21'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T15:02:10.807Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-114370'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-114370'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2528757'
    label: RHBZ#2528757
tags:
  - cve.org
ingestedAt: '2026-10-21T16:05:17.712Z'
---

## Overview

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.

## Affected

- `undertow-servlet (all versions)`
- `pki-core:10.6/resteasy`
- `pki-deps:10.6/resteasy`
- `resteasy`
- `undertow-servlet`
- `jboss-eap-7/eap74-els-openjdk11-openshift-rhel8 (all versions)`
- `jboss-eap-7/eap74-els-openjdk17-openshift-rhel8 (all versions)`
- `jboss-eap-7/eap74-els-openjdk8-openshift-rhel8 (all versions)`
- `undertow-servlet (all versions)`
- `undertow-servlet (all versions)`
- `undertow-servlet`
- `undertow-servlet (all versions)`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.