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CVE-2026-70483
3.1 LOW
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): High (H)
- Privileges Required (PR): Low (L)
- User Interaction (UI): None (N)
- Scope (S): Unchanged (U)
- Confidentiality (C): None (N)
- Integrity (I): None (N)
- Availability (A): Low (L)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): High (H)
- Modified Privileges Required (MPR): Low (L)
- Modified User Interaction (MUI): None (N)
- Modified Confidentiality (MC): None (N)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): None (N)
- Modified Availability (MA): Low (L)
Activity log
- Created suggestion
Open WebUI: Any authenticated user can cancel another user's chat generation via the chat delete endpoint
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, DELETE /api/v1/chats/{id} cancelled a chat's in-flight tasks before checking whether the caller could delete that chat. Any authenticated user who knew another user's chat id could abort that user's running model response, title generation, or tag generation, even though the delete was refused and no chat data was deleted, modified, or disclosed. This issue is fixed in 0.11.0.
References
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https://github.com/open-webui/open-webui/security/advisories/GHSA-3vf6-64vr-3g56 x_refsource_CONFIRM
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https://github.com/open-webui/open-webui/pull/27006 x_refsource_MISC
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https://github.com/open-webui/open-webui/releases/tag/v0.11.0 x_refsource_MISC
Affected products
open-webui
- ==>= 0.9.6, < 0.11.0
Package maintainers
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@shivaraj-bh Shivaraj B H <sbh69840@gmail.com>
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@codgician codgician <codgician@outlook.com>