CVE-2026-105792

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.

• CWE-833

• https://github.com/microsoft/UFO/commit/0eeb792333ce76c856bc1c8b05fd65fc26bd3c50
• https://github.com/microsoft/UFO/releases/tag/v3.0.9
• https://github.com/microsoft/UFO/security/advisories/GHSA-3hwr-qx8m-9xxx
• https://github.com/microsoft/UFO/security/advisories/GHSA-3hwr-qx8m-9xxx

Published

Oct 6, 2026

Last Modified

Oct 6, 2026

Status

Deferred

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