PYSEC-2026-2749 Open WebUI's Model Import Overwrites Any Model Without Ownership Check

Model Import Overwrites Any Model Without Ownership Check Affected Component Model import endpoint: - backend/openwebui/routers/models.py lines 254-308, importmodels Affected Versions Current main branch commit 6fdd19bf1 and likely all versions with model import functionality. Description The POS...

Open WebUI's Model Import Overwrites Any Model Without Ownership Check

Model Import Overwrites Any Model Without Ownership Check Affected ComponentModel import endpoint:- backend/openwebui/routers/models.py lines 254-308, importmodels Affected VersionsCurrent main branch commit 6fdd19bf1 and likely all versions with model import functionality. DescriptionThe POST...

Open WebUI Permission Bypass Privilege Escalation

The vulnerability of the Open WebUI web interface relates to the lack of permission checking for workspace.models.import. Exploiting this vulnerability can allow an attacker, operating remotely, to gain read access, modify data, and enhance their privileges by sending a specially crafted POST...

CVE-2026-44562

Open WebUI vulnerability CVE-2026-44562 affects the model import flow. Before version 0.9.0, POST /api/v1/models/import allowed users with workspace.models_import to overwrite any existing model without ownership checks, merging the attacker payload into the target model when IDs match, and bypas...

Open WebUI security vulnerabilities

Open WebUI is an open-source, scalable, feature-rich, and user-friendly self-hosted WebUI. Versions of Open WebUI prior to 0.9.0 contained security vulnerabilities. These vulnerabilities stemmed from the POST /api/v1/models/import endpoint, which allowed users with the workspace.models.import...

CVE-2026-44562: Missing Authorization

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the POST /api/v1/models/import endpoint allows users with the workspace.modelsimport permission to overwrite any existing model in the database, regardless of ownership. When an...

Missing Authorization

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Missing Authorization through the importmodels process. An attacker can overwrite existing models owned by other users, modify their configuration, and escalate access by submitting crafted payloads to the...