CVE-2026-33032

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Source
https://cve.org/CVERecord?id=CVE-2026-33032
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33032.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-33032
Aliases
Downstream
Related
Published
2026-03-30T17:58:42.159Z
Modified
2026-04-10T05:42:34.370992Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Nginx UI: Unauthenticated MCP Endpoint Allows Remote Nginx Takeover
Details

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 /mcpmessage. While /mcp requires both IP whitelisting and authentication (AuthRequired() middleware), the /mcpmessage 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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33032.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-306"
    ]
}
References

Affected packages

Git / github.com/0xjacky/nginx-ui

Affected ranges

Type
GIT
Repo
https://github.com/0xjacky/nginx-ui
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
1a9cd29a308278173aa0f16234cb78061dd2bd42
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.3.5"
        }
    ]
}

Affected versions

v1.*
v1.1.0
v1.2.0
v1.2.0-alpha.3
v1.2.0-alpha.4
v1.2.0-rc.1
v1.2.0-rc.2
v1.2.0-rc.3
v1.2.1
v1.2.2
v1.3.0
v1.3.0-rc1
v1.3.1
v1.3.1-fix
v1.3.2
v1.3.3-rc1
v1.4.0
v1.4.0-rc1
v1.4.1
v1.4.2
v1.5.0
v1.5.0-beta1
v1.5.0-beta2
v1.5.0-beta3
v1.5.0-beta4
v1.5.0-beta4-fix
v1.5.0-beta5
v1.5.0-beta6
v1.5.0-beta7
v1.5.0-beta8
v1.5.0-beta9
v1.5.1
v1.5.2
v1.6.0
v1.6.0-fix
v1.6.1
v1.6.2
v1.6.3
v1.6.5
v1.6.6
v1.6.7
v1.6.8
v1.7.0
v1.7.0-patch
v1.7.1
v1.7.2
v1.7.3
v1.7.4
v1.7.5
v1.7.6
v1.7.7
v1.7.8
v1.7.9
v1.8.0
v1.8.1
v1.8.2
v1.8.3
v1.8.4
v1.8.4-patch
v1.9.9
v1.9.9-1
v1.9.9-2
v1.9.9-3
v1.9.9-4
v2.*
v2.0.0
v2.0.0-beta.1
v2.0.0-beta.10
v2.0.0-beta.10-patch
v2.0.0-beta.11
v2.0.0-beta.12
v2.0.0-beta.13
v2.0.0-beta.13-patch
v2.0.0-beta.14
v2.0.0-beta.15
v2.0.0-beta.16
v2.0.0-beta.17
v2.0.0-beta.18
v2.0.0-beta.18-patch.1
v2.0.0-beta.18-patch.2
v2.0.0-beta.19
v2.0.0-beta.2
v2.0.0-beta.20
v2.0.0-beta.21
v2.0.0-beta.22
v2.0.0-beta.23
v2.0.0-beta.23-patch.1
v2.0.0-beta.23-patch.2
v2.0.0-beta.24
v2.0.0-beta.25
v2.0.0-beta.25-patch.1
v2.0.0-beta.25-patch.2
v2.0.0-beta.26
v2.0.0-beta.27
v2.0.0-beta.28
v2.0.0-beta.29
v2.0.0-beta.3
v2.0.0-beta.30
v2.0.0-beta.31
v2.0.0-beta.32
v2.0.0-beta.32-patch.1
v2.0.0-beta.33
v2.0.0-beta.34
v2.0.0-beta.35
v2.0.0-beta.36
v2.0.0-beta.37
v2.0.0-beta.37-patch.1
v2.0.0-beta.37-patch.2
v2.0.0-beta.37-patch.3
v2.0.0-beta.37-patch.4
v2.0.0-beta.37-patch.5
v2.0.0-beta.38
v2.0.0-beta.39
v2.0.0-beta.4
v2.0.0-beta.4-patch
v2.0.0-beta.40
v2.0.0-beta.41
v2.0.0-beta.42
v2.0.0-beta.5
v2.0.0-beta.5-patch
v2.0.0-beta.6
v2.0.0-beta.6-patch
v2.0.0-beta.6-patch.2
v2.0.0-beta.7
v2.0.0-beta.8
v2.0.0-beta.8-patch
v2.0.0-beta.9
v2.0.0-rc.1
v2.0.0-rc.1-patch.1
v2.0.0-rc.1-patch.2
v2.0.0-rc.2
v2.0.0-rc.3
v2.0.0-rc.3-patch.1
v2.0.0-rc.4
v2.0.0-rc.4-patch.1
v2.0.0-rc.4-patch.2
v2.0.0-rc.4-patch.3
v2.0.0-rc.5
v2.0.0-rc.6
v2.0.0-rc.6-patch.1
v2.0.0-rc.6-patch.2
v2.0.0-rc.6-patch.3
v2.0.0-rc.6-patch.4
v2.0.0-rc.6-patch.5
v2.0.0-rc.7
v2.0.0-rc.7-patch.2
v2.0.0-rc.7-patch.3
v2.0.0-rc.7-patch.4
v2.0.0-rc.7-patch.5
v2.0.0-rc.7-patch.6
v2.0.0-rc.7-patch.7
v2.0.0-rc.7-patch.8
v2.0.0-rc.8
v2.0.0-rc.8-patch.1
v2.0.1
v2.0.2
v2.1.0
v2.1.0-beta.1
v2.1.0-patch.1
v2.1.0-rc.1
v2.1.0-rc.2
v2.1.0-rc.3
v2.1.1
v2.1.10
v2.1.11
v2.1.12
v2.1.13
v2.1.14
v2.1.15
v2.1.16
v2.1.17
v2.1.2
v2.1.3
v2.1.4
v2.1.4-patch.1
v2.1.5
v2.1.6
v2.1.7
v2.1.8
v2.1.9
v2.2.0
v2.2.0-patch.1
v2.2.1
v2.3.0
v2.3.1
v2.3.2
v2.3.3
v2.3.4
v2.3.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33032.json"