Vulnerability · Published Oct 2, 2026 · Assigned by VulnCheck

CVE-2026-82044UTMStack < 11.2.16 Server-Side Request Forgery via downloadPdf

High 7.7

In plain English

A high-severity server-side request forgery in UTMStack from UTMStack. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities).

Severity (CVSS 3.1)7.7High

Exploit odds (30 days)0.3%top 82.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
UTMStack	UTMStack	0 – before 11.2.16

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References

UTMStack v11.2.16 Release Notes release-notes
Patch Commit patch
https://www.vulncheck.com/advisories/utmstack-server-side-request-forgery-via-downloadpdf third-party-advisory