CVE-2026-45387

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.

PUBLISHED Reserved 2026-05-12 | Published 2026-05-15 | Updated 2026-05-15 | Assigner GitHub_M

Problem types

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Product status

References

github.com/...-webui/security/advisories/GHSA-h2cw-7qw9-56xr exploit

github.com/...-webui/security/advisories/GHSA-h2cw-7qw9-56xr

cve.org (CVE-2026-45387)

nvd.nist.gov (CVE-2026-45387)

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