npm: Nodemailer: Quadratic backtracking in SMTP AUTH mechanism detection regexes allows pre-auth remote denial of service

npm: Nodemailer: Quadratic backtracking in SMTP AUTH mechanism detection regexes allows pre-auth remote denial of service vulnerability discovered by ? in WordPress npm nodemailer versions = 3.0.0, = 10.0.12...

GHSA-4FFR-JQ9G-5FFX Nodemailer: Quadratic backtracking in SMTP AUTH mechanism detection regexes allows pre-auth remote denial of service

Summary Nodemailer's SMTP client applies four regular expressions to a peer's EHLO response to detect the supported SASL mechanisms. Each pattern uses an alternation with two overlapping whitespace-matching sub-patterns, which produces quadratic On^2 backtracking whenever the mechanism name is...

CVE-2026-110869 Nodemailer 3.0.0 before 10.0.13 ReDoS via SMTP AUTH Mechanism Detection Regexes

Nodemailer 3.0.0 before 10.0.13 has a regular expression denial of service in SMTPConnection.actionEHLO, whose four AUTH mechanism detection regexes contain overlapping whitespace sub-patterns that backtrack quadratically. A malicious or man-in-the-middle SMTP server can reply to EHLO with...

CVE-2026-110869 Nodemailer 3.0.0 before 10.0.13 ReDoS via SMTP AUTH Mechanism Detection Regexes

Nodemailer 3.0.0 before 10.0.13 has a regular expression denial of service in SMTPConnection.actionEHLO, whose four AUTH mechanism detection regexes contain overlapping whitespace sub-patterns that backtrack quadratically. A malicious or man-in-the-middle SMTP server can reply to EHLO with...

CVE-2026-110869

The Nodemailer library (versions 3.0.0 before 10.0.13 ) is vulnerable to a Regular Expression Denial of Service (ReDoS) in the SMTPConnection._actionEHLO function. The issue stems from four AUTH mechanism detection regexes containing overlapping whitespace sub-patterns that lead to quadratic back...

CVE-2026-100741

Eval injection in the JScript event-script dispatcher in Progressive Robot Ltd's hMailServer, versions 6.0.0 through 6.3.3 on Windows, allows a remote, unauthenticated attacker to run arbitrary JScript inside the hMailServer service process, with the privileges of the service account, via a...

CVE-2026-100741 Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection') in hMailServer

Eval injection in the JScript event-script dispatcher in Progressive Robot Ltd's hMailServer, versions 6.0.0 through 6.3.3 on Windows, allows a remote, unauthenticated attacker to run arbitrary JScript inside the hMailServer service process, with the privileges of the service account, via a...

PT-2026-99509

Name of the Vulnerable Software and Affected Versions hMailServer versions 6.0.0 through 6.3.3 Description An eval injection exists in the JScript event-script dispatcher on Windows. A remote, unauthenticated attacker can execute arbitrary JScript within the service process using the privileges o...

CVE-2025-68624: Authentication Bypass by Spoofing

N-able Mail Assure through April 2026 contains a design-level authorization flaw that allows an authenticated SMTP user to send outbound email using MAIL FROM addresses belonging to other tenants. When connecting to the SMTP TCP port and performing SMTP AUTH with valid credentials, the server...

CVE-2026-49267: Improper Certificate Validation

Apache Airflow's EmailOperator and the underlying airflow.utils.email helpers established SMTP STARTTLS connections without verifying the remote certificate when the deployment used email smtpstarttls=True without email smtpssl. An attacker positioned between the worker and the configured SMTP...

EUVD-2000-0977

Malware in sbrugna...

EUVD-2001-0039

Malware in sbrugna...

EUVD-2006-2347

Malware in sbrugna...

Security update for nginx

This update for nginx fixes the following issues: CVE-2025-53859:Â the server side may leak arbitrary bytes during the NGINX SMTP authentication process bsc1248070. CVE-2025-23419: session resumption can bypass client certificate authentication requirements using TLSv1.3 bsc1236851. Patch...

SUSE CVE-2025-53859

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...

Moderate: Red Hat Security Advisory: postfix security update

An update for postfix is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

ALSA-2024:9243 Moderate: postfix security update

The postfix packages provide a Mail Transport Agent MTA, which supports protocols like LDAP, SMTP AUTH SASL, and TLS. Security Fixes: postfix: SMTP smuggling vulnerability CVE-2023-51764 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and other...

postfix bug fix and enhancement update

The postfix packages provide a Mail Transport Agent MTA, which supports protocols like LDAP, SMTP AUTH SASL, and TLS. Bug Fixes and Enhancements: backport TLS 1.3 support to postfix 3.3.1 as provided in 3.3.2 BZ1919233...

Medusa - Speedy, Parallel and Modular Login Brute-Forcer

Medusa is intended to be a speedy, massively parallel, modular, login brute-forcer. The goal is to support as many services which allow remote authentication as possible. The author considers following items as some of the key features of this application: Thread-based parallel testing. Brute-for...

CentOS Update for postfix CESA-2011:0422 centos5 x86_64

The remote host is missing an update for the SPDX-FileCopyrightText: 2012 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription scriptxrefname:"URL",...