High severity · published Oct 2, 2026
CVE-2026-82044
UTMStack < 11.2.16 Server-Side Request Forgery via downloadPdf
7.7
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UT
UTMStack · UTMStack
before 11.2.16 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-82044
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-82044
release-notes
https://github.com/UTMStack/UTMStack/releases/tag/v11.2.16
patch
https://github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd
third-party-advisory
https://www.vulncheck.com/advisories/utmstack-server-side-request-forgery-via-downloadpdf
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