Open Computer Use through 1.0.0 Denylist Bypass via Case-Variant Bundle ID

Advisories

Open Computer Use through 1.0.0 Denylist Bypass via Case-Variant Bundle ID

severity: medium
date: 10/11/2026
Affecting: open-computer-use <= 1.0.0
CVE: CVE-2026-108721
CWE: CWE-178 Improper Handling of Case Sensitivity
CVSS: 5.8
CVSS V4 Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
References: 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
Credit: HaiND from the Post and Telecommunication Institute of Technology
Description: 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.

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