# CVE-2026-105792: Microsoft UFO: Authenticated task-result request can deadlock UFO server session manager

> An authenticated attacker can deadlock the Microsoft UFO server session manager by triggering a nested lock acquisition, causing a denial of service.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Oct 2026
- **Updated:** 6 Oct 2026
- **Also known as:** GHSA-3hwr-qx8m-9xxx

## What is CVE-2026-105792?

CVE-2026-105792 is a medium-severity denial of service vulnerability in microsoft UFO, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Microsoft UFO is an open-source framework for intelligent automation across devices and platforms. Prior to 3.0.9, the /api/task_result/{task_name} endpoint calls SessionManager.get_result_by_task() in ufo/server/services/session_manager.py, which acquires a non-reentrant lock and then calls SessionManager.get_result() to acquire the same lock again when the task name maps to a session. An authenticated caller who knows or creates a mapped task name can therefore block the request indefinitely, and in the default single-process server configuration the blocked event-loop thread prevents other HTTP, WebSocket, and dependent background interactions. Unknown task names do not reach the nested call and are not affected. This issue is fixed in version 3.0.9.

Weakness: CWE-833 (Deadlock)

## Which versions are affected by CVE-2026-105792?


## How do I fix CVE-2026-105792?

No fix has been published for CVE-2026-105792 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-105792 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-105792 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-105792 and fix it if it is affected.

What it is: CVE-2026-105792 is a medium-severity denial of service vulnerability in microsoft UFO, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-105792 exists.

Affected product: microsoft UFO. 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-2026-105792/ (Markdown: https://insights.sbomify.com/CVE-2026-105792/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-105792
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-105792
- OSV: https://osv.dev/vulnerability/CVE-2026-105792

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-105792/
Summaries are generated and may contain mistakes; the official description above is the record.