CVE-2026-109284 — Open WebUI 0.11.0 before 0.11.4 Improper Authorization via Chat Fork Endpoint
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 che…
Published: 2026-10-12 · CVSS: 5.3 · CVSS 4.0
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.
Source: CVE Program · Revision 2bc2f154a9513fd639cf69e09a5cddfaedf57bdc