CVEs / CVE-2026-109284
CVE-2026-109284
Open WebUI from 0.11.0 before 0.11.4 contains an improper authorization vulnerability in the chat fork handler, which places forked chats in the source chat's folder without checking folder write access. Shared folder members downgraded to read-only can call POST /api/v1/chats/{id}/fork on chats they created there while they had write access, inserting attacker-controlled chats visible to the folder owner and members.
Affected products · 1
| Product | Versions affected | Fixed in |
|---|---|---|
| Open WebUI | not stated by CPE | — |
Versions as NVD's CPE configuration states them; "—" means the record gives no fixed version, not that none exists. Check the vendor's advisory in the references.
In this registry
- Open WebUI — agent dossier
References · 2
- github.com/open-webui/open-webui/security/advisories/GHSA-6fjc-5cg3-mgvh
- www.vulncheck.com/advisories/open-webui-0.11.0-before-0.11.4-improper-authorization-via-ch
The official record's references, as NVD lists them, minus any tagged Exploit. Nothing here is an exploit or a proof of concept.
Description, scores, versions and references are the official CVE record's own, retrieved 2026-10-25 from NVD. Category, attack surface and cross-links are this registry's classification and can be wrong — use the button above. Not a severity assessment for your deployment.