NGINX: NGINX: Denial of Service via undisclosed requests when ngx_mail_auth_http_module is enabled

A flaw was found in NGINX, specifically within the ngxmailauthhttpmodule. When this module is enabled, and CRAM-MD5 or APOP authentication is active with an authentication server that permits retries, undisclosed requests can cause NGINX worker processes to terminate. This can lead to a Denial of...

Important: Red Hat Security Advisory: nginx security update

An update for nginx is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

NGINX: NGINX: Denial of Service via undisclosed requests when ngx_mail_auth_http_module is enabled

A flaw was found in NGINX, specifically within the ngxmailauthhttpmodule. When this module is enabled, and CRAM-MD5 or APOP authentication is active with an authentication server that permits retries, undisclosed requests can cause NGINX worker processes to terminate. This can lead to a Denial of...

NGINX: NGINX: Denial of Service via undisclosed requests when ngx_mail_auth_http_module is enabled

A flaw was found in NGINX, specifically within the ngxmailauthhttpmodule. When this module is enabled, and CRAM-MD5 or APOP authentication is active with an authentication server that permits retries, undisclosed requests can cause NGINX worker processes to terminate. This can lead to a Denial of...

RHEL 9 : nginx (RHSA-2026:13680)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:13680 advisory. nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage...

CLSA-2026-1777883671 nginx: Fix of 2 CVEs

CVE-2026-27651: fix null pointer dereference in ngxmailauthhttpmodule when authentication retry is enabled with CRAM-MD5 or APOP - CVE-2026-32647: fix buffer over-read/write in ngxhttpmp4module when processing crafted mp4 files with empty stco/co64 atoms...

Ubuntu 22.04 LTS / 24.04 LTS / 25.10 : nginx vulnerabilities (USN-8210-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8210-1 advisory. It was discovered that the nginx ngxmailauthhttpmodule module incorrectly handled certain requests. An attacker could possibly use th...

CLSA-2026-1777022242 nginx: Fix of 2 CVEs

CVE-2026-32647: fix buffer over-read/over-write in ngxhttpmp4module via integer overflow, off-by-one boundary checks, and zero sync sample validation in stss atom - CVE-2026-27651: fix NULL pointer dereference in ngxmailauthhttpmodule when using CRAM-MD5 or APOP authentication with Auth-Wait...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: nginx (UTSA-2026-014291)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-014291 advisory. When the ngxmailauthhttpmodulemodule is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occu...

MiracleLinux 9 : nginx:1.26 (AXSA:2026-457:01)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-457:01 advisory. nginx: NGINX: Denial of Service or Code Execution via specially crafted MP4 files CVE-2026-32647 NGINX: NGINX: Denial of Service or file modification...

CLSA-2026-1776446328 nginx: Fix of 3 CVEs

CVE-2026-27651: fix null pointer dereference in ngxmailauthhttpmodule when clearing password in auth http requests with CRAM-MD5/APOP - CVE-2026-27654: fix heap buffer overflow in DAV module when COPY/MOVE destination URI is shorter than alias - CVE-2026-32647: fix buffer over-read/over-write in...

AlmaLinux 8 : nginx:1.24 (ALSA-2026:6907)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:6907 advisory. nginx: NGINX: Denial of Service or Code Execution via specially crafted MP4 files CVE-2026-32647 NGINX: NGINX: Denial of Service or file modification via...

MiracleLinux 9 : nginx-1.20.1-24.el9_7.2.ML.1 (AXSA:2026-435:02)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-435:02 advisory. nginx: NGINX: Denial of Service or Code Execution via specially crafted MP4 files CVE-2026-32647 NGINX: NGINX: Denial of Service or file modification...

nginx 0.5.15 < 1.28.3 / 1.29.x < 1.29.7 NULL Pointer Dereference

The installed version of nginx is 0.5.15 prior to 1.28.3, or 1.29.x prior to 1.29.7. It is, therefore, affected by the following issue : - When the ngxmailauthhttpmodule module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue...

Important: nginx

Issue Overview: When the ngxmailauthhttpmodule module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when 1 CRAM-MD5 or APOP authentication is enabled, and 2 the authentication server permits retry by returning the...

Important: nginx

Issue Overview: When the ngxmailauthhttpmodule module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when 1 CRAM-MD5 or APOP authentication is enabled, and 2 the authentication server permits retry by returning the...

Amazon Linux 2023 : nginx, nginx-all-modules, nginx-core (ALAS2023-2026-1540)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1540 advisory. When the ngxmailauthhttpmodule module is enabled on NGINX Plus or NGINX Open Source, undisclosed requests can cause worker processes to terminate. This issue may occur when 1 CRAM-MD5 or APOP...

RLSA-2026:7343 Important: nginx:1.26 security update

nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. Security Fixes: nginx: NGINX: Denial of Service or Code Execution via specially crafted MP4 files CVE-2026-32647 NGINX: NGINX: Denial of Service or file...

AlmaLinux 10 : nginx (ALSA-2026:6906)

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:6906 advisory. nginx: NGINX: Denial of Service or Code Execution via specially crafted MP4 files CVE-2026-32647 NGINX: NGINX: Denial of Service or file modification via...

NGINX: NGINX: Denial of Service via undisclosed requests when ngx_mail_auth_http_module is enabled

A flaw was found in NGINX, specifically within the ngxmailauthhttpmodule. When this module is enabled, and CRAM-MD5 or APOP authentication is active with an authentication server that permits retries, undisclosed requests can cause NGINX worker processes to terminate. This can lead to a Denial of...