CVE-2026-27448 pyOpenSSL allows TLS connection bypass via unhandled callback exception in set_tlsext_servername_callback

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 callback for...

CVE-2026-27448 pyOpenSSL allows TLS connection bypass via unhandled callback exception in set_tlsext_servername_callback

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 callback for...

CVE-2026-27448

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 callback for...

389-ds-base: 389-ds-base: Remote Code Execution and Denial of Service via heap buffer overflow

A flaw was found in the 389-ds-base server. A heap buffer overflow vulnerability exists in the schemaattrenumcallback function within the schema.c file. This occurs because the code incorrectly calculates the buffer size by summing alias string lengths without accounting for additional formatting...

PT-2026-30141

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw where the aqc111 suspend function calls the PM variant of its write cmd routine, leading to a task hang during resume operations. Specifically, the issue...

pyOpenSSL 安全漏洞

pyOpenSSL is an open-source Python library developed by the Python Cryptographic Authority. Versions of pyOpenSSL from 22.0.0 to 26.0.0 had security vulnerabilities. These vulnerabilities were caused by an issue where the cookie value returned by setcookiegeneratecallback was too long, leading to...

pyOpenSSL 安全漏洞

pyOpenSSL is an open-source Python library that encapsulates OpenSSL from the Python Cryptographic Authority project. Versions of pyOpenSSL from 0.14.0 to 26.0.0 contained security vulnerabilities. These vulnerabilities stemmed from unhandled exceptions in the settlsextservername Callback functio...

Buffer Overflow

Overview Affected versions of this package are vulnerable to Buffer Overflow via the setcookiegeneratecallback function. An attacker can cause a buffer overflow by providing a callback that returns a cookie value greater than 256 bytes. Note: This is only exploitable if the application explicitly...

pyOpenSSL DTLS cookie callback buffer overflow

If a user provided callback to setcookiegeneratecallback returned a cookie value greater than 256 bytes, pyOpenSSL would overflow an OpenSSL provided buffer. Cookie values that are too long are now rejected...

GHSA-5PWR-322W-8JR4 pyOpenSSL DTLS cookie callback buffer overflow

If a user provided callback to setcookiegeneratecallback returned a cookie value greater than 256 bytes, pyOpenSSL would overflow an OpenSSL provided buffer. Cookie values that are too long are now rejected...

GHSA-VP96-HXJ8-P424 pyOpenSSL allows TLS connection bypass via unhandled callback exception in set_tlsext_servername_callback

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 callback for any security-sensitive behavior, this could allow bypassing it. Unhandled exceptions now result in rejecting the...

pyOpenSSL allows TLS connection bypass via unhandled callback exception in set_tlsext_servername_callback

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 callback for any security-sensitive behavior, this could allow bypassing it. Unhandled exceptions now result in rejecting the...

Not Failing Securely ('Failing Open')

Overview Affected versions of this package are vulnerable to Not Failing Securely 'Failing Open' via the settlsextservernamecallback function. An attacker can bypass security-sensitive checks by causing an unhandled exception in the callback, which results in the connection being accepted. If a...

CVE-2026-4186

A vulnerability was determined in UEditor up to 1.4.3.2. This issue affects some unknown processing of the file php/controller.php?action=uploadimage of the component JSONP Callback Handler. This manipulation of the argument callback causes cross site scripting. The attack can be initiated...

ueditor 代码注入漏洞

Ueditor is an open-source editor developed by Ueditor. Versions of UEditor 1.4.3.2 and earlier have a code injection vulnerability. This vulnerability stems from incorrect handling of the parameter “callback” in the file php/controller.php?action=uploadimage, which may lead to cross-site scriptin...

CVE-2026-32640: Improperly Controlled Modification of Dynamically-Determined Object Attributes

SimpleEval is a library for adding evaluatable expressions into python projects. Prior to 1.0.5, objects including modules can leak dangerous modules through to direct access inside the sandbox. If the objects you've passed in as names to SimpleEval have modules or other disallowed / dangerous...

CVE-2026-4186: Improper Neutralization of Input During Web Page Generation

A vulnerability was determined in UEditor up to 1.4.3.2. This issue affects some unknown processing of the file php/controller.php?action=uploadimage of the component JSONP Callback Handler. This manipulation of the argument callback causes cross site scripting. The attack can be initiated...

PT-2026-25778

Name of the Vulnerable Software and Affected Versions pyOpenSSL versions 0.14.0 through 25.9.9 Description pyOpenSSL is a Python wrapper around the OpenSSL library. If a user-provided callback to the set tlsext servername callback function raised an unhandled exception, a connection would be...

TencentOS Server 4: qemu (TSSA-2026:0167)

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-2026:0167 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:...

CVE-2026-4186

A vulnerability was determined in UEditor up to 1.4.3.2. This issue affects some unknown processing of the file php/controller.php?action=uploadimage of the component JSONP Callback Handler. This manipulation of the argument callback causes cross site scripting. The attack can be initiated...