CVE-2026-82044

HIGH 7.7

UTMStack < 11.2.16 Server-Side Request Forgery via downloadPdf

CVSS Score

7.7

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918
Vendor	utmstack
Product	utmstack
Published	Oct 2, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

UTMStack / UTMStack

0 < 11.2.16

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/UTMStack/UTMStack/releases/tag/v11.2.16 github.com: https://github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd vulncheck.com: https://www.vulncheck.com/advisories/utmstack-server-side-request-forgery-via-downloadpdf

Credits

Adam Nurudini (QwesiRED) VulnCheck