Metrics
Affected Vendors & Products
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-fmqh-xp37-5hr8 | Open WebUI: Channel members can overwrite another member's message via the chat completions endpoint |
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Thu, 10 Sep 2026 22:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Thu, 10 Sep 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Open-webui
Open-webui open-webui |
|
| Vendors & Products |
Open-webui
Open-webui open-webui |
Wed, 09 Sep 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.5 until 0.11.1, the channel branch of chat_completion in backend/open_webui/main.py checked channel write access and channel membership for a supplied message_id but did not verify that the calling user authored the targeted message. A channel member could use the chat completions endpoint to replace another member's message while preserving the victim as the stored author, altering the conversation record without gaining access to other channels. This issue is fixed in version 0.11.1. | |
| Title | Open WebUI: Channel members can overwrite another member's message via the chat completions endpoint | |
| Weaknesses | CWE-639 CWE-862 |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-09-10T15:59:55.721Z
Reserved: 2026-09-09T19:19:27.405Z
Link: CVE-2026-87994
Updated: 2026-09-10T15:59:33.603Z
Status : Undergoing Analysis
Published: 2026-09-09T22:18:47.563
Modified: 2026-09-10T16:18:07.320
Link: CVE-2026-87994
No data.
OpenCVE Enrichment
Updated: 2026-09-10T11:30:06Z
Github GHSA