CVE-2026-84319 Nginx UI: MCP configuration tools bypass restricted directive validation and allow secondary authenticated users to execute NJS in Nginx worker context

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 loadmodule, jsimport, and jscontent. However, the MCP configuration interface allows a secondary authenticated user to write and apply equivale...

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 loadmodule, jsimport, and jscontent. However, the MCP configuration interface allows a secondary authenticated user to write and apply equivale...

CVE-2026-84319

The Nginx UI web interface for the Nginx web server is vulnerable to a protection mechanism failure in versions prior to 2.4.1 . While the regular HTTP configuration API correctly rejects restricted directives like load_module, js_import, and js_content, the MCP configuration interface fails to d...

CVE-2026-84319 Nginx UI: MCP configuration tools bypass restricted directive validation and allow secondary authenticated users to execute NJS in Nginx worker context

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 loadmodule, jsimport, and jscontent. However, the MCP configuration interface allows a secondary authenticated user to write and apply equivale...

CVE-2026-84319 Nginx UI: MCP configuration tools bypass restricted directive validation and allow secondary authenticated users to execute NJS in Nginx worker context

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 loadmodule, jsimport, and jscontent. However, the MCP configuration interface allows a secondary authenticated user to write and apply equivale...

CVE-2026-84317

Prior to version 2.4.1 , Nginx UI (a web user interface for the Nginx web server) contains a vulnerability where the mcp/config/config_add.go path (MCP tool nginx_config_add) fails to call the internal/config/validation.go security control. While other config-write paths block dangerous directive...

CVE-2026-84317 Nginx UI: MCP nginx_config_add skips config directive validation → authenticated nginx directive injection (RCE on the official image)

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, loadmodule of the njs/perl modules, and user root. It is enforced on three of the four config-write...

CVE-2026-84317

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, loadmodule of the njs/perl modules, and user root. It is enforced on three of the four config-write...

CVE-2026-84317 Nginx UI: MCP nginx_config_add skips config directive validation → authenticated nginx directive injection (RCE on the official image)

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, loadmodule of the njs/perl modules, and user root. It is enforced on three of the four config-write...

CVE-2026-84317 Nginx UI: MCP nginx_config_add skips config directive validation → authenticated nginx directive injection (RCE on the official image)

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, loadmodule of the njs/perl modules, and user root. It is enforced on three of the four config-write...

CVE-2026-84313

Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, POST /api/otpenroll and POST /api/finishpasskeyregister are registered outside RequireSecureSession and accept a normal authenticated session without verifying the current password. An attacker with a stolen JWT can bind a...

CVE-2026-84313 Nginx UI: TOTP / passkey enrolment requires no re-authentication, enabling persistent account takeover

Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, POST /api/otpenroll and POST /api/finishpasskeyregister are registered outside RequireSecureSession and accept a normal authenticated session without verifying the current password. An attacker with a stolen JWT can bind a...

CVE-2026-84313 Nginx UI: TOTP / passkey enrolment requires no re-authentication, enabling persistent account takeover

Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, POST /api/otpenroll and POST /api/finishpasskeyregister are registered outside RequireSecureSession and accept a normal authenticated session without verifying the current password. An attacker with a stolen JWT can bind a...

CVE-2026-84313

The Nginx UI web interface (prior to version 2.4.1 ) is vulnerable to unauthorized account persistence because the POST /api/otp_enroll and POST /api/finish_passkey_register endpoints are registered outside of RequireSecureSession . These endpoints accept a standard authenticated session without ...

CVE-2026-84313 Nginx UI: TOTP / passkey enrolment requires no re-authentication, enabling persistent account takeover

Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, POST /api/otpenroll and POST /api/finishpasskeyregister are registered outside RequireSecureSession and accept a normal authenticated session without verifying the current password. An attacker with a stolen JWT can bind a...

CVE-2026-84321

Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, GenerateShortToken creates standalone short-token records without a long Token value, but DeleteUserTokens invalidates cached entries only when the long Token field is nonempty. A revoked short token can therefore remain i...

CVE-2026-84321 Nginx UI: Standalone short tokens survive administrative revocation in cache and authenticate again after account re-enable

Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, GenerateShortToken creates standalone short-token records without a long Token value, but DeleteUserTokens invalidates cached entries only when the long Token field is nonempty. A revoked short token can therefore remain i...

CVE-2026-84321 Nginx UI: Standalone short tokens survive administrative revocation in cache and authenticate again after account re-enable

Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, GenerateShortToken creates standalone short-token records without a long Token value, but DeleteUserTokens invalidates cached entries only when the long Token field is nonempty. A revoked short token can therefore remain i...

CVE-2026-84321 Nginx UI: Standalone short tokens survive administrative revocation in cache and authenticate again after account re-enable

Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, GenerateShortToken creates standalone short-token records without a long Token value, but DeleteUserTokens invalidates cached entries only when the long Token field is nonempty. A revoked short token can therefore remain i...

CVE-2026-84321

The Nginx UI web interface for the Nginx web server is vulnerable to an insufficient session expiration issue (CWE-613) prior to version 2.4.1 . The root cause is that the GenerateShortToken function creates short-token records without a long Token value, while DeleteUserTokens only invalidates c...