Medium severity · published Oct 2, 2026
CVE-2026-82040
UTMStack < 11.2.16 SSRF via IdentityProviderService
5.0
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% 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-2026-82040
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-82040
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-ssrf-via-identityproviderservice
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