CVE-2026-27205 Flask session does not add `Vary: Cookie` header when accessed in some ways

Flask is a web server gateway interface WSGI web application framework. In versions 3.1.2 and below, when the session object is accessed, Flask should set the Vary: Cookie header., resulting in a Use of Cache Containing Sensitive Information vulnerability. The logic instructs caches not to cache...

Flask 安全漏洞

Flask is a Python micro-framework developed by Pallets, used for building web applications. Versions of Flask prior to 3.1.2 have a security vulnerability caused by an improper setting of the Vary header when accessing session objects. This vulnerability may lead to the use of cache containing...

CVE-2026-27004

OpenClaw is a personal AI assistant. Prior to version 2026.2.15, in some shared-agent deployments, OpenClaw session tools sessionslist, sessionshistory, sessionssend allowed broader session targeting than some operators intended. This is primarily a configuration/visibility-scoping issue in...

Flask session does not add `Vary: Cookie` header when accessed in some ways

When the session object is accessed, Flask should set the Vary: Cookie header. This instructs caches not to cache the response, as it may contain information specific to a logged in user. This is handled in most cases, but some forms of access such as the Python in operator were overlooked. The...

CVE-2020-24594

Mitel MiCloud Management Portal before 6.1 SP5 could allow an unauthenticated attacker to execute arbitrary scripts due to insufficient input validation, aka XSS. A successful exploit could allow an attacker to gain access to a user session...

Missing Authentication for Critical Function

Overview Affected versions of this package are vulnerable to Missing Authentication for Critical Function on the critical API endpoints messages, transactions, and session, handling sensitive user data and system operations. An unauthenticated attacker can access confidential conversation data an...

PT-2025-48792

The MxChat – AI Chatbot for WordPress plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.5.5 via upload filenames. This makes it possible for unauthenticated attackers to extract session values that can subsequently be used to access...

CVE-2025-12390

A flaw was found in Keycloak. In Keycloak where a user can accidentally get access to another user's session if both use the same device and browser. This happens because Keycloak sometimes reuses session identifiers and doesn’t clean up properly during logout when browser cookies are missing. As...

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