What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-02 · updated 2026-10-06
• Weakness: CWE-918

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

• UTMStack: before 11.2.16 — fixed in 11.2.16

How to fix

Upgrade to a fixed version: UTMStack 11.2.16. Check the vendor advisory for mitigations.

References

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

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