{"api_version":"1","generated_at":"2026-06-24T16:29:02+00:00","cve":"CVE-2026-54015","urls":{"html":"https://cve.report/CVE-2026-54015","api":"https://cve.report/api/cve/CVE-2026-54015.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-54015","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-54015"},"summary":{"title":"Open WebUI: Prompt history IDOR: unbound history_id allows cross-prompt read and deletion","description":"Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, Open WebUI's prompt version-history endpoints authorize the prompt_id in the URL but then act on caller-supplied history IDs without verifying that the history row belongs to that prompt (history_entry.prompt_id == prompt.id). This affects /api/v1/prompts/id/{prompt_id}/history/diff, /api/v1/prompts/id/{prompt_id}/update/version, and /api/v1/prompts/id/{prompt_id}/history/{history_id}. 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