CVE-2026-108721 PUBLISHED

Open Computer Use through 1.0.0 on macOS contains an improper case sensitivity handling vulnerability that allows local MCP callers to bypass the password-manager denylist using case-variant bundle identifiers. Attackers, including prompt-injected model turns, can pass identifiers like com.1Password.1Password to get_app_state and action tools to read accessibility trees, capture screenshots, and drive unlocked password manager interfaces.

• HaiND from the Post and Telecommunication Institute of Technology finder

• https://hackmd.io/@haind/rJHI_S6IiMl
• https://github.com/iFurySt/open-codex-computer-use/blob/8a3a7dec06402db2d760368cb24676ad3ba42c49/packages/OpenComputerUseKit/Sources/OpenComputerUseKit/AppDiscovery.swift#L144-L198
• https://github.com/iFurySt/open-codex-computer-use/blob/8a3a7dec06402db2d760368cb24676ad3ba42c49/packages/OpenComputerUseKit/Sources/OpenComputerUseKit/AppDiscovery.swift#L554-L572
• https://github.com/iFurySt/open-codex-computer-use
• VulnCheck Advisory: Open Computer Use through 1.0.0 Denylist Bypass via Case-Variant Bundle ID

• Improper Handling of Case Sensitivity CWE