CVE-2026-84317

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Source
https://cve.org/CVERecord?id=CVE-2026-84317
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-84317.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-84317
Aliases
  • GHSA-76pm-mq2q-9gcr
Published
2026-10-12T20:59:58Z
Modified
2026-10-15T02:30:41Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Nginx UI: MCP nginx_config_add skips config directive validation → authenticated nginx directive injection (RCE on the official image)
Details

Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, internal/config/validation.go (ValidateConfigFile) is a security control that blocks dangerous nginx directives — js_, perl_, load_module of the njs/perl modules, and user root. It is enforced on three of the four config-write paths: api/config/add.go, api/config/modify.go, and mcp/config/config_modify.go. The fourth path — the MCP tool nginx_config_add (mcp/config/config_add.go) — does NOT call it: it writes the caller-supplied content straight to disk and reloads nginx. An authenticated MCP caller (or an MCP agent induced via prompt injection) can therefore inject exactly the directives the control is meant to block, leading to nginx code execution on deployments where the njs/perl module is available (e.g. the official Docker image). This issue is fixed in version 2.4.1.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-20",
        "CWE-693"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84317.json"
}
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
Fixed
23d1934099b05b2a01589b48129dc3d3159d91c2
Fixed
0540f3ecf7824e9adbe408f3166d151651ccf4dd
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "2.4.1"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

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
v2.3.10
v2.3.11
v2.3.2
v2.3.3
v2.3.4
v2.3.5
v2.3.6
v2.3.7
v2.3.8
v2.3.9
v2.4.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-84317.json"