Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, when setting model permissions so that a group has read access to it, intending for other users to use it, those users also can read the model's system prompt. However users may consider their system prompt confidential, so this is considered a security issue. This vulnerability is fixed in 0.9.5.
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History
Fri, 15 May 2026 21:45:00 +0000
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Fri, 15 May 2026 21:15:00 +0000
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Fri, 15 May 2026 20:45:00 +0000
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| Description | Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, when setting model permissions so that a group has read access to it, intending for other users to use it, those users also can read the model's system prompt. However users may consider their system prompt confidential, so this is considered a security issue. This vulnerability is fixed in 0.9.5. | |
| Title | Open WebUI: Sharing models for others to use (read permission) also exposes model details (system prompt leakage) | |
| Weaknesses | CWE-200 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-05-15T20:32:02.012Z
Updated: 2026-05-15T21:08:29.508Z
Reserved: 2026-05-12T00:51:29.087Z
Link: CVE-2026-45387
Updated: 2026-05-15T21:08:18.979Z
Status : Received
Published: 2026-05-15T21:16:37.177
Modified: 2026-05-15T22:16:55.720
Link: CVE-2026-45387
No data.