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CVE-2026-82040— UTMStack < 11.2.16 SSRF via IdentityProviderService

Quick assessment

Affected
UTMStack UTMStack
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 UTMStack 11.2.16 之前的版本中，IdentityProviderService.validateMetadataUrl() 存在一个服务端请求伪造（SSRF）漏洞。攻击者可以通过向 identity-providers 端点提供恶意元数据 URL，使服务器向任意内部或云元数据主机发送请求。该漏洞允许经过身份验证的攻击者利用 POST/PUT /api/identity-providers 端点，由于未对目标主机、IP 地址或协议进行验证，攻击者可借此执行内网端口扫描并访问云实例元数据服务。

CVSS 5.0 · Medium
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I. Basic Information for CVE-2026-82040

Vulnerability Information
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Vulnerability Title
UTMStack < 11.2.16 SSRF via IdentityProviderService
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
UTMStack UTMStack 0 ~ 11.2.16 -

II. Public POCs for CVE-2026-82040

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III. Intelligence Information for CVE-2026-82040

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Vendor Advisories for CVE-2026-82040 (1)

Vendor Pages for CVE-2026-82040 (1)

Same Patch Batch · UTMStack · 2026-10-02 · 7 CVEs total

CVE-2026-82041 9.9 CRITICAL UTMStack < 11.2.16 Missing Authorization via Command WebSocket
CVE-2026-82042 9.8 CRITICAL UTMStack < 11.2.16 Authentication Bypass via InternalApiKeyFilter
CVE-2026-82039 8.8 HIGH UTMStack < 11.2.16 SQL Injection via searchGroupsByFilter
CVE-2026-82044 7.7 HIGH UTMStack < 11.2.16 Server-Side Request Forgery via downloadPdf
CVE-2026-82045 6.5 MEDIUM UTMStack < 11.2.16 JPQL Injection via searchPropertyValues
CVE-2026-82043 5.3 MEDIUM UTMStack < 11.2.16 Account Enumeration via Password Reset Endpoint

IV. Related Vulnerabilities

Same product: UTMStack
Same vendor: UTMStack
Same weakness: CWE-918

V. Comments for CVE-2026-82040

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