CVE-2026-54007
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline.
Impact
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, the chat message listener allows non-same-origin input:prompt and action:submit messages, so an external site can set prompt text and trigger submitPrompt() in an authenticated victim session. I validated this with a cross-origin attacker page that auto-posted messages and caused unauthorized POST /api/v1/chats/new and POST /api/chat/completions requests containing attacker-controlled prompts. This enables cross-site forced actions and model/tool execution under victim privileges without consent. This vulnerability is fixed in 0.9.6.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | open-webui | <= 0.9.5 | 0.9.6 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Openwebui | Open Webui | before 0.9.6 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-3vv5-8xxp-4f55
- https://github.com/open-webui/open-webui/security/advisories/GHSA-3vv5-8xxp-4f55
- https://nvd.nist.gov/vuln/detail/CVE-2026-54007
- https://github.com/open-webui/open-webui
- https://github.com/pypa/advisory-database/tree/main/vulns/open-webui/PYSEC-2026-2695.yaml
- https://pypi.org/project/open-webui