---
id: CVE-2026-82044
title: >-
  UTMStack before 11.2.16 contains a server-side request forgery vulnerability
  that allows authenticated attackers to make the server request arbitrary
  internal resources by supplying an unvalidated url parameter to the
  PdfService.download…
summary: >-
  UTMStack before 11.2.16 contains a server-side request forgery vulnerability
  that allows authenticated attackers to make the server request arbitrary
  internal resources by supplying an unvalidated url parameter to the
  PdfService.download…
severity: high
cvss: 7.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-918
vendor: UTMStack
product: UTMStack
affected:
  - UTMStack < 11.2.16
published: '2026-10-02'
updated: '2026-10-02'
sourceUpdated: '2026-10-02T21:16:56.933'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82044'
references:
  - url: 'https://github.com/UTMStack/UTMStack/releases/tag/v11.2.16'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/utmstack-server-side-request-forgery-via-downloadpdf
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-02T22:33:09.847Z'
---

## Overview

UTMStack before 11.2.16 contains a server-side request forgery vulnerability that allows authenticated attackers to make the server request arbitrary internal resources by supplying an unvalidated url parameter to the PdfService.downloadPdf() method exposed via GET /api/generate-pdf-report. Attackers can leverage this to force the web-pdf microservice to fetch internal backend endpoints, the OpenSearch cluster, or the cloud instance-metadata service, exposing sensitive internal data rendered into the returned PDF.

## Remediation

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