PYSEC-2026-1732 open-webui is Vulnerable to Incorrect Access Control

open-webui v0.6.33 is vulnerable to Incorrect Access Control. The API /api/tasks/stop/ directly accesses and cancels tasks without verifying user ownership, enabling attackers a normal user to stop arbitrary LLM response tasks...

Open WebUI Authentication DoS

The vulnerability in the Open WebUI web interface is related to the lack of authentication when processing endpoints like /api/tasks and /api/tasks/stop/taskid. Exploiting this vulnerability allows a malicious actor to cause service failures by sending specially crafted requests...

Open WebUI security vulnerabilities

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under open source. Versions of Open WebUI prior to 0.9.0 contained security vulnerabilities. These vulnerabilities stemmed from the lack of authorization checks in the GET /api/tasks and POST /api/tasks/stop/taskid...

Incorrect Access Control

open-webui is vulnerable to Incorrect Access Control. The vulnerability is due to missing ownership verification in the /api/tasks/stop/ API, allowing a normal user to stop arbitrary LLM response tasks by directly cancelling tasks without proper authorization checks...

GHSA-FRV8-GFFC-37PX open-webui is Vulnerable to Incorrect Access Control

open-webui v0.6.33 is vulnerable to Incorrect Access Control. The API /api/tasks/stop/ directly accesses and cancels tasks without verifying user ownership, enabling attackers a normal user to stop arbitrary LLM response tasks...

CVE-2025-63681

open-webui v0.6.33 is vulnerable to Incorrect Access Control. The API /api/tasks/stop/ directly accesses and cancels tasks without verifying user ownership, enabling attackers a normal user to stop arbitrary LLM response tasks...

PT-2025-49046

Name of the Vulnerable Software and Affected Versions open-webui version 0.6.33 Description The software contains a flaw related to access control. The /api/tasks/stop/ API endpoint allows direct access and cancellation of tasks without verifying user ownership. This enables an attacker, even a...

EUVD-2025-201164

open-webui v0.6.33 is vulnerable to Incorrect Access Control. The API /api/tasks/stop/ directly accesses and cancels tasks without verifying user ownership, enabling attackers a normal user to stop arbitrary LLM response tasks...