Security Bulletin: pyOpenSSL TLS SNI Callback Exception Handling Flaw Allows Security Bypass

Summary pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 0.14.0 and prior to version 26.0.0, if a user provided callback to settlsextservernamecallback raised an unhandled exception, this would result in a connection being accepted. If a user was relying on this...

OpenSSH: OpenSSH: Security bypass via mishandling of authorized_keys principals option

A flaw was found in OpenSSH. This vulnerability arises from the incorrect handling of the authorizedkeys principals option in uncommon scenarios. Specifically, when a principals list is used with a Certificate Authority that includes comma characters, OpenSSH may misinterpret the input. This coul...

Important: Red Hat Security Advisory: openssh security update

An update for openssh is now available for Red Hat Enterprise Linux 10. 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 each vulnerability from...

OpenSSH: OpenSSH: Security bypass via mishandling of authorized_keys principals option

A flaw was found in OpenSSH. This vulnerability arises from the incorrect handling of the authorizedkeys principals option in uncommon scenarios. Specifically, when a principals list is used with a Certificate Authority that includes comma characters, OpenSSH may misinterpret the input. This coul...

dotnet: .NET: Security Bypass and Denial of Service Vulnerability

A flaw was found in .NET. A remote attacker could exploit a vulnerability related to unsafe transforms in EncryptedXml. This could lead to a Denial of Service DoS, making the service unavailable, and a bypass of security features...

dotnet: .NET: Security Bypass and Denial of Service Vulnerability

A flaw was found in .NET. A remote attacker could exploit a vulnerability related to unsafe transforms in EncryptedXml. This could lead to a Denial of Service DoS, making the service unavailable, and a bypass of security features...

dotnet: .NET: Security Bypass and Denial of Service Vulnerability

A flaw was found in .NET. A remote attacker could exploit a vulnerability related to unsafe transforms in EncryptedXml. This could lead to a Denial of Service DoS, making the service unavailable, and a bypass of security features...

RHEL 9 : openssh (RHSA-2026:13381)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:13381 advisory. OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files...

AlmaLinux 10 : openssh (ALSA-2026:13380)

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:13380 advisory. OpenSSH: OpenSSH: Privilege escalation via scp legacy protocol when not preserving file mode CVE-2026-35385 OpenSSH: OpenSSH: Security bypass via...

ALSA-2026:13381 Important: openssh security update

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fixes: OpenSSH: OpenSSH: Privilege escalation via scp legacy protocol when not preserving file mode...

ALSA-2026:13380 Important: openssh security update

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fixes: OpenSSH: OpenSSH: Privilege escalation via scp legacy protocol when not preserving file mode...

RHEL 8 : openssh (RHSA-2026:13383)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:13383 advisory. OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files...

RHEL 10 : openssh (RHSA-2026:13380)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:13380 advisory. OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files...

AlmaLinux 8 : openssh (ALSA-2026:13383)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:13383 advisory. OpenSSH: OpenSSH: Privilege escalation via scp legacy protocol when not preserving file mode CVE-2026-35385 OpenSSH: OpenSSH: Security bypass via...

Important: openssh security update

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fixes: OpenSSH: OpenSSH: Privilege escalation via scp legacy protocol when not preserving file mode...

gnutls: gnutls: Security bypass allows acceptance of revoked server certificates via crafted OCSP response

A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol OCSP response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabl...

Google AppSheet Exploited in 30,000-User Facebook Phishing Operation

Scammers are abusing Google AppSheet and Google Drive to bypass security filters and steal thousands of Facebook Business accounts globally...

CVE-2026-43030

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF subsystem. A logic error in the regsafe function, specifically when handling pointers to packets, could lead to an incorrect state where valid packet ranges are not properly explored. This vulnerability may allow an attacker to...

CVE-2026-43009

A flaw was found in the Linux kernel's BPF Berkeley Packet Filter verifier. The verifier, responsible for ensuring the safety of BPF programs, incorrectly tracks the precision of atomic fetch operations. This error can lead to the verifier pruning execution paths that should not be considered...

CVE-2026-3832 Gnutls: gnutls: security bypass allows acceptance of revoked server certificates via crafted ocsp response

A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol OCSP response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabl...