PYSEC-2026-4082 MCP Atlassian: Insecure File Permissions on OAuth Token Storage

Summary The OAuth token fallback file storage in OAuthConfig.savetokenstofile creates token files containing access tokens, refresh tokens, and cloud IDs with default filesystem permissions typically 0644 on Linux, world-readable. Any local user on a shared system can read these files to obtain...

CVE-2026-77268 MCP Atlassian: Insecure File Permissions on OAuth Token Storage

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, the OAuth fallback token directory and JSON file are created without explicit owner-only modes. Local users or processes with access through the resulting group or world permission bi...

CVE-2019-5625

The Android mobile application Halo Home before 1.11.0 stores OAuth authentication and refresh access tokens in a clear text file. This file persists until the user logs out of the application and reboots the device. This vulnerability can allow an attacker to impersonate the legitimate user by...