CVE-2026-19553

A flaw was found in Python. When establishing secure connections using the SSLContext.wrapbio function with hostname checking enabled, the module fails to validate that a target server hostname is supplied. Because of this missing check, certificate hostname verification is silently skipped rathe...

CVE-2025-12790

A flaw was found in Rubygem MQTT. By default, the package used to not have hostname validation, resulting in possible Man-in-the-Middle MITM attack...

Man-in-the-Middle (MitM)

Overview Affected versions of this package are vulnerable to Man-in-the-Middle MitM due to Missing TLS hostname validation. Remediation There is no fixed version for twitter-stream. References - GitHub Security Advisory - GitHub Security Advisory Credit: Agustin Gianni...

RHEL 7 : OpenShift Container Platform 3.11.318 jenkins-2-plugins (RHSA-2020:5102)

The remote Redhat Enterprise Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:5102 advisory. Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or privat...

Man-in-the-Middle (MitM)

jenkins-2-plugins/mailer is vulnerable to man-in-the-middle attack. Missing hostname validation in Mailer Plugin allows an attacker to perform man-in-the-middle attacks...

CVE-2019-19941

Missing hostname validation in Swisscom Centro Grande before 6.16.12 allows a remote attacker to inject its local IP address as a domain entry in the DNS service of the router via crafted hostnames in DHCP requests, causing XSS...