id: PYSEC-2026-1732
summary: open-webui is Vulnerable to Incorrect Access Control
details: 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.
aliases:
- CVE-2025-63681
- GHSA-frv8-gffc-37px
modified: '2026-07-23T09:44:32.769134Z'
published: '2026-07-07T16:03:12.102402Z'
references:
- type: ADVISORY
  url: https://nvd.nist.gov/vuln/detail/CVE-2025-63681
- type: WEB
  url: https://github.com/TOAST-Research/pocs/blob/main/openwebui/arbitirary_task_stop/report.md
- type: PACKAGE
  url: https://github.com/open-webui/open-webui
- type: WEB
  url: https://github.com/open-webui/open-webui/blob/46ae3f4f5d7d4d706041bdae4ad2d802e568712b/backend/open_webui/main.py#L1652
- type: PACKAGE
  url: https://pypi.org/project/open-webui
- type: ADVISORY
  url: https://github.com/advisories/GHSA-frv8-gffc-37px
- type: FIX
  url: https://github.com/open-webui/open-webui/commit/e7ff4768f8ffe1924b4576381c9e45e8a64350e4
affected:
- package:
    name: open-webui
    ecosystem: PyPI
    purl: pkg:pypi/open-webui
  ranges:
  - type: ECOSYSTEM
    events:
    - introduced: '0'
    - fixed: 0.9.0
  versions:
  - 0.1.124
  - 0.1.125
  - 0.2.0
  - 0.2.1
  - 0.2.2
  - 0.2.3
  - 0.2.4
  - 0.2.5
  - 0.3.0
  - 0.3.1
  - 0.3.10
  - 0.3.12
  - 0.3.13
  - 0.3.14
  - 0.3.15
  - 0.3.16
  - 0.3.17
  - 0.3.17.dev2
  - 0.3.17.dev3
  - 0.3.17.dev4
  - 0.3.17.dev5
  - 0.3.18
  - 0.3.19
  - 0.3.2
  - 0.3.20
  - 0.3.21
  - 0.3.22
  - 0.3.23
  - 0.3.24
  - 0.3.25
  - 0.3.26
  - 0.3.27
  - 0.3.27.dev1
  - 0.3.27.dev2
  - 0.3.27.dev3
  - 0.3.28
  - 0.3.29
  - 0.3.3
  - 0.3.30
  - 0.3.30.dev1
  - 0.3.30.dev2
  - 0.3.31
  - 0.3.31.dev1
  - 0.3.32
  - 0.3.33
  - 0.3.33.dev1
  - 0.3.34
  - 0.3.35
  - 0.3.4
  - 0.3.5
  - 0.3.6
  - 0.3.7
  - 0.3.8
  - 0.3.9
  - 0.4.0
  - 0.4.0.dev1
  - 0.4.0.dev2
  - 0.4.1
  - 0.4.2
  - 0.4.3
  - 0.4.4
  - 0.4.5
  - 0.4.6
  - 0.4.6.dev1
  - 0.4.7
  - 0.4.8
  - 0.5.0
  - 0.5.0.dev1
  - 0.5.0.dev2
  - 0.5.1
  - 0.5.10
  - 0.5.11
  - 0.5.12
  - 0.5.13
  - 0.5.14
  - 0.5.15
  - 0.5.16
  - 0.5.17
  - 0.5.18
  - 0.5.19
  - 0.5.2
  - 0.5.20
  - 0.5.3
  - 0.5.3.dev1
  - 0.5.4
  - 0.5.5
  - 0.5.6
  - 0.5.7
  - 0.5.8
  - 0.5.9
  - 0.6.0
  - 0.6.1
  - 0.6.10
  - 0.6.11
  - 0.6.12
  - 0.6.13
  - 0.6.14
  - 0.6.15
  - 0.6.16
  - 0.6.18
  - 0.6.19
  - 0.6.2
  - 0.6.20
  - 0.6.21
  - 0.6.22
  - 0.6.23
  - 0.6.24
  - 0.6.25
  - 0.6.26
  - 0.6.26.dev1
  - 0.6.27
  - 0.6.28
  - 0.6.29
  - 0.6.3
  - 0.6.30
  - 0.6.31
  - 0.6.32
  - 0.6.33
  - 0.6.4
  - 0.6.5
  - 0.6.6
  - 0.6.6.dev1
  - 0.6.7
  - 0.6.8
  - 0.6.9
  - 0.6.34
  - 0.6.35
  - 0.6.36
  - 0.6.37
  - 0.6.38
  - 0.6.39
  - 0.6.40
  - 0.6.41
  - 0.6.42
  - 0.6.43
  - 0.7.0
  - 0.7.1
  - 0.7.2
  - 0.8.0
  - 0.8.1
  - 0.8.10
  - 0.8.11
  - 0.8.12
  - 0.8.2
  - 0.8.3
  - 0.8.4
  - 0.8.5
  - 0.8.6
  - 0.8.7
  - 0.8.8
  - 0.8.9
severity:
- type: CVSS_V4
  score: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P