CVE-2026-82040

Medium

Description

UTMStack before 11.2.16 contains a server-side request forgery vulnerability in IdentityProviderService.validateMetadataUrl() that allows authenticated attackers to make the server send requests to arbitrary internal or cloud metadata hosts by supplying a malicious metadata URL to the identity-providers endpoint. Attackers can exploit the POST/PUT /api/identity-providers endpoint with no validation of target host, IP, or scheme to perform internal network port scanning and access cloud instance-metadata services.

SeverityMedium

CVSS5.0

Exploit probability—

ProductUTMStack

PublishedOct 2, 2026

First seenOct 2, 2026

Weakness typeCWE-918Server-side request forgery (SSRF)

How to fix

Update

UTMStack UTMStack11.2.16 or later

Patches

github.com/utmstack/UTMStack/commit/4e7a727c3b8d8e2ad020d3b4f982a6d085dbecdd

Vendor advisories

github.com/UTMStack/UTMStack/releases/tag/v11.2.16

Affected products

Product	Affected versions	Fixed in
UTMStack UTMStack	v < 11.2.16	11.2.16

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.