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    CVE-2026-84319

    Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, the regular HTTP configuration API rejects restricted Nginx directives such as load_module, js_import, and js_content. However, the MCP configuration interface allows a secondary authenticated user to write and apply equivalent restricted configuration content. This allows the user to load ngx_http_js_module.so, import attacker-controlled JavaScript, reload Nginx, and execute NJS in the Nginx worker context. This issue is fixed in version 2.4.1.

    Published:Oct 12, 2026
    Last Modified:Oct 13, 2026
    EPS:Oct 12, 2026
    EPSS Score:0.0028
    CVSS Score:8.3

    Affected Products

    Vendor
    0xjacky
    Product
    Nginx-ui

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-693 Protection Mechanism Failure

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs
    CAPEC-107 Cross Site Tracing
    CAPEC-127 Directory Indexing
    CAPEC-17 Using Malicious Files
    CAPEC-20 Encryption Brute Forcing
    CAPEC-22 Exploiting Trust in Client
    CAPEC-237 Escaping a Sandbox by Calling Code in Another Language
    CAPEC-36 Using Unpublished Interfaces or Functionality
    CAPEC-477 Signature Spoofing by Mixing Signed and Unsigned Content
    CAPEC-480 Escaping Virtualization
    CAPEC-51 Poison Web Service Registry
    CAPEC-57 Utilizing REST's Trust in the System Resource to Obtain Sensitive Data
    CAPEC-59 Session Credential Falsification through Prediction
    CAPEC-65 Sniff Application Code
    CAPEC-668 Key Negotiation of Bluetooth Attack (KNOB)
    CAPEC-74 Manipulating State
    CAPEC-87 Forceful Browsing

    Related CVEs

    CVE-2026-84312 (CVSS 7.1) — Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, GetCasdoorUri uses the configured C…
    CVE-2026-84360 (CVSS 8.1) — Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, the HTTP configuration mutation rou…
    CVE-2026-84316 (CVSS 8.8) — Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, config.ValidateConfigDirectives spl…
    CVE-2026-84317 (CVSS 8.8) — Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, internal/config/validation.go (Vali…
    CVE-2026-84313 (CVSS 8.8) — Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, POST /api/otp_enroll and POST /api/…
    CVE-2026-84321 (CVSS 5.4) — Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, GenerateShortToken creates standalo…
    CVE-2026-84314 (CVSS 8.7) — Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, the POST /api/users/:id user-manage…
    CVE-2026-84320 (CVSS 6.3) — Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.3, Nginx UI validates an automatic bac…
    CVE-2026-84318 (CVSS 8.8) — Nginx UI is a web user interface for the Nginx web server. From 2.0.0-rc.6 until 2.4.1, the MCP tool nginx_con…
    CVE-2026-84315 (CVSS 8.3) — Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, Nginx UI does not apply RequireSecu…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High