CVE-2026-48529 GitHub MCP Server: Lockdown mode singleton in HTTP server causes cross-user GraphQL client confusion

GitHub MCP Server is GitHub's official MCP Server. From 0.22.0 until 1.1.2, when running in HTTP mode with --lockdown-mode enabled, the RepoAccessCache is implemented as a process-global singleton initialized with the first authenticated user's GraphQL client. All subsequent requests from differe...

CVE-2026-48529

GitHub MCP Server is GitHub's official MCP Server. From 0.22.0 until 1.1.2, when running in HTTP mode with --lockdown-mode enabled, the RepoAccessCache is implemented as a process-global singleton initialized with the first authenticated user's GraphQL client. All subsequent requests from differe...

CVE-2026-48529 GitHub MCP Server: Lockdown mode singleton in HTTP server causes cross-user GraphQL client confusion

GitHub MCP Server is GitHub's official MCP Server. From 0.22.0 until 1.1.2, when running in HTTP mode with --lockdown-mode enabled, the RepoAccessCache is implemented as a process-global singleton initialized with the first authenticated user's GraphQL client. All subsequent requests from differe...

EUVD-2026-39809

GitHub MCP Server is GitHub's official MCP Server. From 0.22.0 until 1.1.2, when running in HTTP mode with --lockdown-mode enabled, the RepoAccessCache is implemented as a process-global singleton initialized with the first authenticated user's GraphQL client. All subsequent requests from differe...

CVE-2026-48529

GitHub MCP Server (versions 0.22.0–1.1.2) in HTTP mode with --lockdown-mode stores RepoAccessCache as a process-global singleton initialized with the first authenticated user’s GraphQL client. All subsequent requests reuse that singleton, causing lockdown queries to run with the first user’s toke...

CVE-2026-48529 GitHub MCP Server: Lockdown mode singleton in HTTP server causes cross-user GraphQL client confusion

GitHub MCP Server is GitHub's official MCP Server. From 0.22.0 until 1.1.2, when running in HTTP mode with --lockdown-mode enabled, the RepoAccessCache is implemented as a process-global singleton initialized with the first authenticated user's GraphQL client. All subsequent requests from differe...

Access Control Bypass

Overview Affected versions of this package are vulnerable to Access Control Bypass in the GetInstance process. An attacker can access or modify resources belonging to other users by sending requests with their own credentials after another user has initialized the singleton, causing all subsequen...

GHSA-PJP5-FPMR-3349 GitHub MCP Server: Lockdown mode singleton in HTTP server causes cross-user GraphQL client confusion

Summary When running in HTTP mode with --lockdown-mode enabled, the RepoAccessCache is implemented as a process-global singleton initialized with the first authenticated user's GraphQL client. All subsequent requests from different users share this singleton and their lockdown-related GraphQL...

Access Control Bypass

Overview Affected versions of this package are vulnerable to Access Control Bypass in the GetInstance process. An attacker can access or modify resources belonging to other users by sending requests with their own credentials after another user has initialized the singleton, causing all subsequen...

Access Control Bypass

Overview Affected versions of this package are vulnerable to Access Control Bypass in the GetInstance process. An attacker can access or modify resources belonging to other users by sending requests with their own credentials after another user has initialized the singleton, causing all subsequen...

GitHub MCP Server: Lockdown mode singleton in HTTP server causes cross-user GraphQL client confusion

Summary When running in HTTP mode with --lockdown-mode enabled, the RepoAccessCache is implemented as a process-global singleton initialized with the first authenticated user's GraphQL client. All subsequent requests from different users share this singleton and their lockdown-related GraphQL...

PT-2026-52644

Name of the Vulnerable Software and Affected Versions GitHub MCP Server versions 0.22.0 through 1.1.1 Description When operating in HTTP mode with --lockdown-mode enabled, the RepoAccessCache is implemented as a process-global singleton. This singleton is initialized using the GraphQL client of t...

CVE-2026-48507

Snipe-IT is an IT asset/license management system. A vulnerability in versions prior to 8.6.0 allows a non-admin user holding only the granular users.edit permission to lock every admin out of the instance by editing the activated flag which determines whether or not a user can login and the...

CVE-2025-48616

In multiple functions of KeyguardViewMediator.java , there is a possible way to bypass lockdown mode with screen pinning due to a logic error in the code. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitatio...

CVE-2026-28929

A logic issue was addressed with improved checks. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. Replying to an email could display remote images in Mail in Lockdown Mode...

EUVD-2025-210014

In multiple functions of KeyguardViewMediator.java , there is a possible way to bypass lockdown mode with screen pinning due to a logic error in the code. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitatio...

CVE-2025-48616

In multiple functions of KeyguardViewMediator.java , there is a possible way to bypass lockdown mode with screen pinning due to a logic error in the code. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitatio...

CVE-2025-48616

In multiple functions of KeyguardViewMediator.java , there is a possible way to bypass lockdown mode with screen pinning due to a logic error in the code. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitatio...

CVE-2025-48616

CVE-2025-48616 affects a component in KeyguardViewMediator.java, enabling a bypass of lockdown mode via screen pinning due to a logic error. This can lead to local information disclosure without requiring exploitation privileges or user interaction. Document does not specify affected product vers...

CVE-2025-48616

In multiple functions of KeyguardViewMediator.java , there is a possible way to bypass lockdown mode with screen pinning due to a logic error in the code. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitatio...