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CVE-2026-28786

Open WebUI vulnerable to Path Traversal in `POST /api/v1/audio/transcriptions` PUBLISHED

Description (CNA)

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.8.6, an unsanitized filename field in the speech-to-text transcription endpoint allows any authenticated non-admin user to trigger a `FileNotFoundError` whose message — including the server's absolute `DATA_DIR` path — is returned verbatim in the HTTP 400 response body, confirming information disclosure on all default deployments. Version 0.8.6 patches the issue.

Affected (CNA)

Vendor / productVersions
open-webui / open-webuiaffected < 0.8.6

CWE

CWE-22, CWE-209

References

ADP enrichment

CISA-ADP

No English description supplied.