Nginx

A heap buffer overflow vulnerability, CVE-2026-42533, exists in NGINX Plus and NGINX Open Source when a 'map' directive uses regex matching and references its capture variables before the map's output variable or uses a non-cacheable variable under certain conditions, allowing an unauthenticated attacker to send crafted HTTP requests causing denial-of-service or remote code execution.

An injection vulnerability, CVE-2026-50107, exists in the NGINX configuration generator component of NGINX Gateway Fabric when configured with NGINX Plus or NGINX Open Source as the data plane, allowing authenticated attackers with CRD modification permissions to inject arbitrary NGINX configuration directives via unsanitized user-supplied string values in the access log format setting, leading to control plane compromise and potential defense evasion or system impact.

A vulnerability in Nginx allows a remote attacker to execute arbitrary code and cause a denial-of-service condition, affecting Nginx Open Source versions 1.x before 1.30.2, versions after 1.31.0 before 1.31.1, Nginx Plus versions 37.x before 37.0.1.1, and versions Rx before R36 P5 or R32 P7.

A remote, anonymous attacker can exploit a vulnerability in NGINX Open Source and NGINX Plus to perform a denial-of-service attack and potentially execute arbitrary code.

NGINX JavaScript is vulnerable to a heap buffer overflow (CVE-2026-8711) when the js_fetch_proxy directive is configured with client-controlled variables and ngx.fetch(), allowing unauthenticated attackers to cause worker process restarts or, with ASLR disabled, code execution via crafted HTTP requests.

Multiple vulnerabilities in NGINX Open Source and NGINX Plus allow a remote, anonymous attacker to bypass security measures, execute arbitrary code, manipulate data, disclose confidential information, or cause a denial-of-service condition.

NGINX Plus and NGINX Open Source are vulnerable to a heap buffer overflow (CVE-2026-42945) due to crafted HTTP requests when the rewrite directive is followed by a rewrite, if, or set directive and an unnamed PCRE capture with a replacement string that includes a question mark, potentially leading to denial of service or code execution.

Multiple vulnerabilities in NGINX Plus and NGINX can be exploited by an attacker to perform a denial of service attack, manipulate data, bypass security measures, and potentially execute arbitrary program code, leading to significant impact.

NGINX Plus and NGINX Open Source are vulnerable to a denial-of-service condition (CVE-2026-27651) when the ngx_mail_auth_http_module is enabled, CRAM-MD5 or APOP authentication is used, and the authentication server permits retry via the Auth-Wait response header, leading to worker process termination.

A buffer overflow vulnerability (CVE-2026-27654) exists in the ngx_http_dav_module of NGINX Open Source and NGINX Plus, potentially allowing attackers to terminate the NGINX worker process or modify files outside the document root by exploiting specific configurations with MOVE or COPY methods.

Nginx-UI is vulnerable to unauthenticated remote takeover due to a missing authentication check on the `/mcp_message` endpoint, allowing attackers to invoke MCP tools without authentication, leading to arbitrary nginx configuration modification, traffic interception, service disruption, configuration exfiltration, and credential harvesting; the default empty IP whitelist allows access from any network attacker.

Detection of local file inclusion (LFI) attacks targeting Kubernetes Nginx ingress controllers through analysis of Kubernetes logs.

This analytic detects remote file inclusion (RFI) attacks targeting Kubernetes Nginx ingress controllers by analyzing Kubernetes logs from the Nginx ingress controller and identifying suspicious URL requests, potentially leading to arbitrary code execution or sensitive data access.