CVE-2026-63096 Dendrite 0.13.8 SSRF via Unauthenticated Legacy Media Download Endpoint

Dendrite through 0.13.8 contains a server-side request forgery vulnerability that allows unauthenticated attackers to cause the server to open outbound TLS connections to arbitrary hosts and ports by supplying an unvalidated serverName parameter to the legacy media download endpoint. Attackers ca...

CVE-2026-44452

CVE-2026-44452 affects the h2o HTTP server (supports HTTP/1.x, 2, 3). Affected behavior occurs when a TLS/QUIC ClientHello contains a zero-length SNI extension; h2o can attempt to copy the hostname assuming NULL-termination, causing a heap/segmentation fault that may enable a denial-of-service. T...

EulerOS 2.0 SP15 : pyOpenSSL (EulerOS-SA-2026-2458)

According to the versions of the pyOpenSSL packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 22.0.0 and prior to version 26.0.0, if a user provided callback t...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation in TLSSocket.prototype.setSession lib/internal/tls/wrap.js, which reuses a cached TLS session for a connection with a different servername without re-verifying the server's certificate against the new hos...

EulerOS Virtualization 2.13.0 : pyOpenSSL (EulerOS-SA-2026-2414)

According to the versions of the pyOpenSSL packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : 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...

EulerOS 2.0 SP13 : pyOpenSSL (EulerOS-SA-2026-2308)

According to the versions of the pyOpenSSL packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : 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 t...

USN-8335-1 pyopenssl vulnerability

It was discovered that pyOpenSSL incorrectly handled exceptions in the tlsextservername callback. This could result in connections being accepted after an exception, contrary to expectations...

CVE-2026-9454

A flaw has been found in Totolink A8000RU 7.1cu.643b20200521. This vulnerability affects the function setOpenVpnCertGenerationCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Executing a manipulation of the argument servername can lead to os command injection. The...

CVE-2026-9454 Totolink A8000RU Web Management cstecgi.cgi setOpenVpnCertGenerationCfg os command injection

A flaw has been found in Totolink A8000RU 7.1cu.643b20200521. This vulnerability affects the function setOpenVpnCertGenerationCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Executing a manipulation of the argument servername can lead to os command injection. The...

CVE-2026-9454

A flaw has been found in Totolink A8000RU 7.1cu.643b20200521. This vulnerability affects the function setOpenVpnCertGenerationCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Executing a manipulation of the argument servername can lead to os command injection. The...

TOTOLINK A8000RU 操作系统命令注入漏洞

The TOTOLINK A8000RU is a wireless router from China's Gion Electronics TOTOLINK. An operating system command injection vulnerability exists in the Totolink A8000RU version 7.1cu.643b20200521, which originates from the function /cgi-bin/cstecgi.cgi in the file /cgi-bin/cstecgi.cgi in the componen...

PT-2026-43042

A flaw has been found in Totolink A8000RU 7.1cu.643 b20200521. This vulnerability affects the function setOpenVpnCertGenerationCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Executing a manipulation of the argument servername can lead to os command injection. The...

Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to a security bypass in pyOpenSSL [CVE-2026-27448, CVE-2026-27459]

Summary IBM Watson Speech Services Cartridge is vulnerable to a security bypass in pyOpenSSL due to a flaw allowing user provided callback to settlsextservernamecallback. This raises an unhandled exception, resulting in connections being accepted that could allow bypassing of security-sensitive...

CLSA-2026-1779181743 pyOpenSSL: Fix of CVE-2026-27448

CVE-2026-27448: fix fail-open in settlsextservernamecallback when callback raises exception...

EUVD-2024-28103

/cgi-bin/time.cgi in Atlona AT-OME-MS42 Matrix Switcher 1.1.2 allow remote authenticated users to execute arbitrary commands as root via a POST request that carries a serverName parameter...

CVE-2024-30167

/cgi-bin/time.cgi in Atlona AT-OME-MS42 Matrix Switcher 1.1.2 allow remote authenticated users to execute arbitrary commands as root via a POST request that carries a serverName parameter...

CVE-2024-30167

/cgi-bin/time.cgi in Atlona AT-OME-MS42 Matrix Switcher 1.1.2 allow remote authenticated users to execute arbitrary commands as root via a POST request that carries a serverName parameter...

CVE-2024-30167

/cgi-bin/time.cgi in Atlona AT-OME-MS42 Matrix Switcher 1.1.2 allow remote authenticated users to execute arbitrary commands as root via a POST request that carries a serverName parameter...

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...

CLSA-2026-1776098295 pyOpenSSL: Fix of CVE-2026-27448

CVE-2026-27448: fix fail-open in settlsextservernamecallback when callback raises exception...