Trending
CVE-2026-33032

CVE detail

CVE-2026-33032

Nginx UI is a web user interface for the Nginx web server. In versions 2.3.5 and prior, the nginx-ui MCP (Model Context Protocol) integration exposes two HTTP endpoints: /mcp and /mcp_message. While /mcp requires both IP whitelisting and authentication (AuthRequired() middleware), the /mcp_message endpoint only applies IP whitelisting - and the default IP whitelist is empty, which the middleware treats as "allow all". This means any network attacker can invoke all MCP tools without authentication, including restarting nginx, creating/modifying/deleting nginx configuration files, and triggering automatic config reloads - achieving complete nginx service takeover. At time of publication, there are no publicly available patches.

CVSS 9.8 · CriticalBuzz score 34.0

Buzz score

Why this CVE is surfacing

Buzz score total 34.0

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 19.5 · diversity 14.5 · KEV 0.0 · OTX 0.0 · PoC 0.0

Mention score

19.5

6 evidence mentions in the snapshot

Diversity score

14.5

5 sources across 2 categories

KEV score

0.0

No KEV entry observed

OTX score

0.0

0 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

6 source links · newest first

Security Affairs newsletter Round 573 by Pierluigi Paganini – INTERNATIONAL EDITIONSecurity Affairs
A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press. Hidden VMs: how hackers leverage QEMU to stealthily steal data and spread malware Nexcorium Mirai variant […]
newssecurityaffairs.comApr 19, 2026, 9:32 AM
Critical nginx UI tool vulnerability opens web servers to full compromiseCSO Online
Security vendor Pluto Security has published details of a critical vulnerability in the open-source nginx UI web server configuration tool that has been under active exploitation by cybercriminals since March. News of the flaw, identified as CVE-2026-33032, first appeared on the National Vulnerability Database (NVD) on March 30, the same day that threat intelligence companies […]
newswww.csoonline.comApr 15, 2026, 8:52 PM
CVE-2026-33032: severe nginx-ui bug grants unauthenticated server accessSecurity Affairs
An actively exploited critical nginx-ui flaw (CVE-2026-33032) lets attackers bypass authentication and take full control of Nginx servers. A critical vulnerability in nginx-ui, tracked as CVE-2026-33032 (CVSS score of 9.8), is being actively exploited, allowing attackers to bypass authentication and fully take over Nginx servers. The issue stems from improper protection of the /mcp_message endpoint, […]
newssecurityaffairs.comApr 15, 2026, 6:17 PM
Exploited Vulnerability Exposes Nginx Servers to HackingSecurityWeek
Hackers are exploiting CVE-2026-33032, a critical remote takeover vulnerability in the Nginx UI management tool.
newswww.securityweek.comApr 15, 2026, 2:45 PM
https://websec.net/blog/cve-2026-33032-unauthenticated-nginx-ui-mcp-takeover-69e1200f9fceb1f3fbe9c47fwebsec.net
No excerpt available.
Exploitwebsec.netMar 30, 2026, 6:16 PM
https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-h6c2-x2m2-mwhfgithub.com
No excerpt available.
Exploitgithub.comMar 30, 2026, 6:16 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

Related records

Similar CVEs

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External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2026-33032.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:a:nginxui:nginx_uiSearch this product on Shodan

Exact CVE query

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vuln:CVE-2026-33032Search this CVE on Shodan

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Metadata

Canonical fields

NVD status

Modified

Published

Mar 30, 2026

Modified

Jun 17, 2026

Official record

Authoritative NVD record

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE IDs

Vendor classifications

How this vector reads

CVSS 3.1 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Network. The vulnerable system can be reached across network boundaries.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Privileges Required (PR): None. The attacker needs no privileges on the vulnerable system.
User Interaction (UI): None. Exploitation does not require another user to act.
Scope (S): Unchanged. Impacts remain within the vulnerable security authority.
Confidentiality Impact (C): High. There is a total or serious impact to this security property.
Integrity Impact (I): High. There is a total or serious impact to this security property.
Availability Impact (A): High. There is a total or serious impact to this security property.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses