# CVE-2026-108721: Open Computer Use through 1.0.0 Denylist Bypass via Case-Variant Bundle ID

> Local attackers can bypass password manager denylists using case-variant bundle IDs to read accessibility trees and drive unlocked interfaces.

- **Severity:** Medium 5.8 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 11 Oct 2026
- **Updated:** 13 Oct 2026
- **Also known as:** GHSA-6m6f-g6c9-vp3w

## What is CVE-2026-108721?

CVE-2026-108721 is a medium-severity vulnerability in iFurySt open-computer-use, published on 11 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official 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.

Weakness: CWE-178 (Improper Handling of Case Sensitivity)

## Which versions are affected by CVE-2026-108721?


## How do I fix CVE-2026-108721?

No fix has been published for CVE-2026-108721 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-108721 being exploited?

There is no known exploitation of CVE-2026-108721 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-108721 and fix it if it is affected.

What it is: CVE-2026-108721 is a medium-severity vulnerability in iFurySt open-computer-use, published on 11 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-108721 in the wild and no public exploit code.

Affected product: iFurySt open-computer-use. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-108721/ (Markdown: https://insights.sbomify.com/CVE-2026-108721/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-108721
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-108721
- OSV: https://osv.dev/vulnerability/CVE-2026-108721

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-108721/
Summaries are generated and may contain mistakes; the official description above is the record.