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CVE-2026-109284

5.3 medium SSVC exploitation: none Published
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 2

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-23 21:57
  2. First seenCVSS 5.3NVD modified 2026-10-13 20:39

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 2