nginx: NGINX: Arbitrary code execution via crafted HTTP requests

A flaw was found in NGINX. An unauthenticated attacker can exploit this vulnerability by sending specially crafted HTTP requests when the map directive uses regular expression regex matching and references regex capture variables before referencing the map output variable. This can lead to a heap...

nginx: NGINX: Arbitrary code execution via crafted HTTP requests

A flaw was found in NGINX. An unauthenticated attacker can exploit this vulnerability by sending specially crafted HTTP requests when the map directive uses regular expression regex matching and references regex capture variables before referencing the map output variable. This can lead to a heap...

nginx: NGINX: Arbitrary code execution via crafted HTTP requests

A flaw was found in NGINX. An unauthenticated attacker can exploit this vulnerability by sending specially crafted HTTP requests when the map directive uses regular expression regex matching and references regex capture variables before referencing the map output variable. This can lead to a heap...

NGINX Map Directive Code Execution

The vulnerability in the Map Directive component of NGINX Plus and NGINX Open Source web servers is related to use-after-free memory allocation. Exploitation of this vulnerability may allow a remote attacker to cause a denial of service or execute arbitrary code...

nginx-map-risk-audit

CVE-2026-42533: NGINX Map Regex Risk Review Defensive research note on CVE-2026-42533, a heap buffer overflow in NGINX request processing tied to map directives with regex captures and certain variable evaluation patterns. In plain English: NGINX is web server and reverse proxy software. It often...

CVE-2026-42533

CVE-2026-42533 — nginx Heap Buffer Overflow PoC Exploit Pre-Authentication Remote Code Execution via Two-Pass Capture Clobbering Public PoC released 2026-07-27 — Don't wait, patch now. | ---|--- CVE| CVE-2026-42533 CVSS 4.0| 9.2 Critical Type| Heap Buffer Overflow CWE-122 Affected| nginx 0.9.6 –...

CVE-2026-42533

NGINX Vulnerability Checker Script to non-intrusively check if an NGINX installation could be affected by vulnerability CVE-2026-42533. Important: This project does not exploit the vulnerability. It only performs local checks on the installed version and server configuration to identify potential...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: nginx (UTSA-2026-146978)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-146978 advisory. A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and the root directive or access log format references the map's...

nginx 1.30.x < 1.30.6 / 1.31.2 < 1.31.7 Heap Buffer Overflow

According to its Server response header, the installed version of nginx is 1.30.0 prior to 1.30.6, or 1.31.2 prior to 1.31.7. It is, therefore, affected by the following issue: - A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and the root...

BIT-NGINX-GATEWAY-2026-93479 NGINX map directive and regex matching vulnerability

A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and the root directive or access log format references the map's regex capture variables before referencing the map output variable. Alternatively, the same result could be achieved by using a...

BIT-NGINX-2026-93479 NGINX map directive and regex matching vulnerability

A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and the root directive or access log format references the map's regex capture variables before referencing the map output variable. Alternatively, the same result could be achieved by using a...

CVE-2026-93479

A flaw was found in NGINX. An unauthenticated attacker can exploit this vulnerability by sending specially crafted HTTP requests when the map directive uses regular expression regex matching and references regex capture variables before referencing the map output variable. This can lead to a heap...

nginx 0.9.x < 1.30.4 / 1.31.x < 1.31.3 Heap-based Buffer Overflow

According to its Sever response header, the installed version of nginx is 0.9.x prior to 1.30.4 or 1.31.x prior to 1.31.3. It is, therefore, affected by the following issue : - A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and a string...

UBUNTU-CVE-2026-93479

A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and the root directive or access log format references the map's regex capture variables before referencing the map output variable. Alternatively, the same result could be achieved by using a...

CVE-2026-93479

A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and the root directive or access log format references the map's regex capture variables before referencing the map output variable. Alternatively, the same result could be achieved by using a...

ALPINE-CVE-2026-93479

A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and the root directive or access log format references the map's regex capture variables before referencing the map output variable. Alternatively, the same result could be achieved by using a...

AZL-108461 CVE-2026-93479 affecting package nginx for versions less than 1.30.6-1

A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and the root directive or access log format references the map's regex capture variables before referencing the map output variable. Alternatively, the same result could be achieved by using a...

CVE-2026-93479

A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and the root directive or access log format references the map's regex capture variables before referencing the map output variable. Alternatively, the same result could be achieved by using a...

CVE-2026-93479

A heap-based buffer overflow (CWE-122) exists in NGINX Plus , NGINX Open Source , and several F5 NGINX-based products (including NGINX Instance Manager , F5 WAF for NGINX , F5 DoS for NGINX , NGINX Gateway Fabric , and NGINX Ingress Controller ). The vulnerability occurs when a map directive uses...

CVE-2026-93479 NGINX map directive and regex matching vulnerability

A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and the root directive or access log format references the map's regex capture variables before referencing the map output variable. Alternatively, the same result could be achieved by using a...