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Nginx CVE-2026-44015

HIGH
Server-Side Request Forgery (SSRF) (CWE-918)
2026-05-12 GitHub_M GHSA-wr32-99hh-6f35
8.5
CVSS 3.1 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
8.5 HIGH
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None

Lifecycle Timeline

1
CVE Published
May 12, 2026 - 20:49 nvd
HIGH 8.5

DescriptionGitHub Advisory

Nginx UI is a web user interface for the Nginx web server. In 2.3.4 and earlier, an authenticated user can perform Server-Side Request Forgery (SSRF) by creating a cluster node pointing to an arbitrary internal URL and then sending API requests with the X-Node-ID header. The Proxy middleware forwards these requests to the attacker-specified internal address, bypassing network segmentation and enabling access to services bound to localhost or internal networks.

Analysis

Nginx UI is a web user interface for the Nginx web server. In 2.3.4 and earlier, an authenticated user can perform Server-Side Request Forgery (SSRF) by creating a cluster node pointing to an arbitrary internal URL and then sending API requests with the X-Node-ID header. The Proxy middleware forwards these requests to the attacker-specified internal address, bypassing network segmentation and enabling access to services bound to localhost or internal networks.

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CVE-2026-44015 vulnerability details – vuln.today

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