---
id: CVE-2026-108721
title: >-
  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
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 promp…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N'
cwe:
  - CWE-178
published: '2026-10-11'
updated: '2026-10-11'
sourceUpdated: '2026-10-11T13:17:15.470'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-108721'
references:
  - url: 'https://github.com/iFurySt/open-codex-computer-use'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/iFurySt/open-codex-computer-use/blob/8a3a7dec06402db2d760368cb24676ad3ba42c49/packages/OpenComputerUseKit/Sources/OpenComputerUseKit/AppDiscovery.swift#L144-L198
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/iFurySt/open-codex-computer-use/blob/8a3a7dec06402db2d760368cb24676ad3ba42c49/packages/OpenComputerUseKit/Sources/OpenComputerUseKit/AppDiscovery.swift#L554-L572
    label: disclosure@vulncheck.com
  - url: 'https://hackmd.io/@haind/rJHI_S6IiMl'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/open-computer-use-through-1.0.0-denylist-bypass-via-case-variant-bundle-id
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-11T13:51:17.027Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.