CVSS 3.1
6.4 mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:LCVE-2026-54015
Medium (6.4) in openwebui open webui. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in open-webui 0.9.6.
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}. An authenticated user with access to any prompt they control, plus a victim prompt_history.id, can read or delete another user's private prompt history. This vulnerability is fixed in 0.9.6.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 19% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-284, CWE-639
- Published
- Modified
- Record from
- the NVD, synced
Affected
- openwebui:open_webui
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-4r4w-2wgp-w7cj | PyPI | open-webui | <0.9.6 | 0.9.6 |
| PYSEC-2026-2701 | PyPI | open-webui | <0.9.6 | 0.9.6 |