CVE-2026-108721
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
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.
Risk Assessment
Attackers can access the password manager and steal sensitive data such as passwords and keys, leading to a serious security breach. This may result in account takeover and unauthorized access to systems.
Recommendation
Update Open Computer Use to a version later than 1.0.0 if available, or fix case sensitivity handling in bundle identifiers. Restrict MCP tool permissions and monitor for unusual activity.
Other vulnerabilities in Open Computer Use
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

