ROS-20260622-73-0044

The vulnerability of the ngxmailsmtpmodule module in NGINX Plus and NGINX Open Source servers is related to the failure to take measures to neutralize CRLF sequences. Exploiting this vulnerability can allow an attacker to compromise the integrity of the protected information...

TencentOS Server 4: nginx (TSSA-2026:0279)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:0279 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:...

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...

USN-8210-1 nginx vulnerabilities

It was discovered that the nginx ngxmailauthhttpmodule module incorrectly handled certain requests. An attacker could possibly use this issue to cause nginx to crash, resulting in a denial of service. CVE-2026-27651 It was discovered that the nginx ngxhttpdavmodule module incorrectly handled...

nginx: NGINX ngx_mail_smtp_module vulnerability

A memory access flaw has been discovered in nginx. The ngxmailsmtpmodule might allow an unauthenticated attacker to over-read NGINX SMTP authentication process memory. As a result, the server side may leak arbitrary bytes sent in a request to the authentication server. This issue occurs during th...

NGINX: NGINX Plus: NGINX Open Source: NGINX Plus and NGINX Open Source: Request manipulation via header injection in SMTP upstream requests

A flaw was found in NGINX Plus and NGINX Open Source, specifically within the ngxmailsmtpmodule. This vulnerability allows an attacker-controlled DNS Domain Name System server to inject arbitrary headers into SMTP Simple Mail Transfer Protocol upstream requests. This is due to the improper handli...

NGINX ngx_mail_smtp_module Data Compromise

The vulnerability of the ngxmailsmtpmodule module in NGINX Plus and NGINX Open Source servers is related to the failure to take measures to neutralize CRLF sequences. Exploiting this vulnerability can allow a remote attacker to compromise the integrity of the protected information...

SUSE CVE-2026-28753

NGINX Plus and NGINX Open Source have a vulnerability in the ngxmailsmtpmodule module due to the improper handling of CRLF sequences in DNS responses. This allows an attacker-controlled DNS server to inject arbitrary headers into SMTP upstream requests, leading to potential request manipulation...

Linux Distros Unpatched Vulnerability : CVE-2026-28753

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NGINX Plus and NGINX Open Source have a vulnerability in the ngxmailsmtpmodule module due to the improper handling of CRLF sequences in DNS responses. This allo...

CVE-2026-28753

NGINX Plus and NGINX Open Source have a vulnerability in the ngxmailsmtpmodule module due to the improper handling of CRLF sequences in DNS responses. This allows an attacker-controlled DNS server to inject arbitrary headers into SMTP upstream requests, leading to potential request manipulation...

CVE-2026-28753

NGINX Plus and NGINX Open Source have a vulnerability in the ngxmailsmtpmodule module due to the improper handling of CRLF sequences in DNS responses. This allows an attacker-controlled DNS server to inject arbitrary headers into SMTP upstream requests, leading to potential request manipulation...

CVE-2026-28753

NGINX Plus and NGINX Open Source have a vulnerability in the ngxmailsmtpmodule module due to the improper handling of CRLF sequences in DNS responses. This allows an attacker-controlled DNS server to inject arbitrary headers into SMTP upstream requests, leading to potential request manipulation...

CVE-2026-28753

NGINX Plus and NGINX Open Source have a vulnerability in the ngxmailsmtpmodule module due to the improper handling of CRLF sequences in DNS responses. This allows an attacker-controlled DNS server to inject arbitrary headers into SMTP upstream requests, leading to potential request manipulation...

CVE-2026-28753

NGINX Plus and NGINX Open Source have a vulnerability in the ngxmailsmtpmodule module due to the improper handling of CRLF sequences in DNS responses. This allows an attacker-controlled DNS server to inject arbitrary headers into SMTP upstream requests, leading to potential request manipulation...

PT-2026-27432

Name of the Vulnerable Software and Affected Versions NGINX Plus and NGINX Open Source affected versions not specified Description The software contains a flaw in the ngx mail smtp module module related to how it processes Carriage Return Line Feed CRLF sequences within DNS responses. An attacker...

F5 NGINX Plus and F5 NGINX Open Source have injection vulnerabilities

F5 NGINX Plus and F5 NGINX Open Source are both products of the American company F5. F5 NGINX Plus is a software-based application delivery platform. F5 NGINX Open Source is a high-performance web server, reverse proxy server, load balancer, and API gateway. Both F5 NGINX Plus and F5 NGINX Open...

GHSA-83PF-V6QQ-PWMR Fickling has a detection bypass via stdlib network-protocol constructors

Our assessment imtplib, imaplib, ftplib, poplib, telnetlib, and nntplib were added to the list of unsafe imports https://github.com/trailofbits/fickling/commit/6d20564d23acf14b42ec883908aed159be7b9ade. The UnusedVariables heuristic works as expected. Original report Summary Fickling's checksafety...

Unity Linux 20.1070e Security Update: nginx (UTSA-2025-993314)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-993314 advisory. NGINX Open Source and NGINX Plus have a vulnerability in the ngxmailsmtpmodule that might allow an unauthenticated attacker to over-read NGINX SMTP authentication...

BIT-NGINX-GATEWAY-2025-53859 NGINX ngx_mail_smtp_module vulnerability

NGINX Open Source and NGINX Plus have a vulnerability in the ngxmailsmtpmodule that might allow an unauthenticated attacker to over-read NGINX SMTP authentication process memory; as a result, the server side may leak arbitrary bytes sent in a request to the authentication server. This issue happe...

Updated nginx package fixes security vulnerability

It was discovered that nginx contains a security issue in the ngxmailsmtpmodule which might allow an attacker to cause buffer over-read potentially resulting in sensitive information leak in a HTTP request to the authentication server CVE-2025-53859...