Open WebUI Prompt history IDOR: unbound history_id allows cross-prompt read and deletion

Summary Open WebUI's prompt version-history endpoints authorize the promptid in the URL but then act on caller-supplied history IDs without verifying that the history row belongs to that prompt historyentry.promptid == prompt.id. Three operations are affected: - GET...

PT-2026-50487

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.6 Description Open WebUI contains an authorization flaw in its prompt version-history endpoints. While the system authorizes the prompt id provided in the URL, it fails to verify that the requested history...