---
id: CVE-2026-78602
title: >-
  Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  (CWE-22) in Elastic Maps Server can lead to information disclosure via Path
  Traversal (CAPEC-126)
summary: >-
  Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  (CWE-22) in Elastic Maps Server can lead to information disclosure via Path
  Traversal (CAPEC-126). An unauthenticated attacker able to reach the service
  over …
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-22
vendor: elastic
product: maps_server
affected:
  - 'maps_server >= 8.19.11, < 8.19.19'
  - 'maps_server >= 9.3.0, < 9.4.4'
  - maps_server = 9.5.0
patched:
  - maps_server 9.4.4
published: '2026-09-02'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T18:29:27.060'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-78602'
references:
  - url: >-
      https://discuss.elastic.co/t/elastic-maps-server-8-19-19-9-4-4-9-5-1-security-update-esa-2026-148/390108
    label: security@elastic.co
tags:
  - nvd
epss: 0.00376
epssPercentile: 0.31521
ingestedAt: '2026-09-08T19:08:49.591Z'
---

## Overview

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE-22) in Elastic Maps Server can lead to information disclosure via Path Traversal (CAPEC-126). An unauthenticated attacker able to reach the service over the network could cause it to return the contents of files outside its intended content directory that are readable by the server process.

## Affected

- `maps_server >= 8.19.11, < 8.19.19`
- `maps_server >= 9.3.0, < 9.4.4`
- `maps_server = 9.5.0`

## Remediation

Upgrade past the affected range:

- `maps_server 9.4.4`