VulnerabilityThe Hacker News
9.8 — CRITICAL
Actively Exploited nginx-ui Flaw (CVE-2026-33032) Enables Full Nginx Server Takeover
A recently disclosed critical security flaw impacting nginx-ui, an open-source, web-based Nginx management tool, has come under active exploitation in the wild. The vulnerability in question is CVE-2026-33032 (CVSS score: 9.8), an authentication bypass vulnerability that enables threat actors to seize control of the Nginx service. It has been codenamed MCPwn by Pluto Security. "
🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview
A critical authentication bypass vulnerability (CVE-2026-33032) in nginx-ui has been actively exploited, allowing threat actors to seize control of the Nginx service, posing a significant risk to organizations using this web-based management tool.
⚙️Technical Details
Affected Systems
Nginx UINginx Ui
💥Impact Assessment
Severity: c
Who Is at Risk
Organizations using nginx-uiIndividual users of nginx-ui
🛡️Recommended Actions
1Update to the latest version of nginx-ui
2Disable MCP (Model Context Protocol) integration until a patch is available
3Implement additional security measures, such as IP whitelisting and authentication
📦Affected Products
Nginxui Nginx UiNginxuiNginx Ui
🔐NVD Verified DataVERIFIED
CVE-2026-33032 ↗CVSS 9.8 — CRITICAL
Attack Vector
NETWORK
Complexity
LOW
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWeaknesses
CWE-306
Affected Products (CPE)
Nginxui Nginx Ui
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