Information Exposure Affecting open-webui package, versions [,0.8.6)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published31 Mar 2026
- disclosed27 Mar 2026
- creditAkshat Sinha
Introduced: 27 Mar 2026
CVE-2026-28786 (opens in a new tab)How to fix?
Upgrade open-webui to version 0.8.6 or higher.
Overview
open-webui is an Open WebUI
Affected versions of this package are vulnerable to Information Exposure via the POST /api/v1/audio/transcriptions endpoint. An attacker can obtain sensitive server filesystem path information by submitting a crafted multipart request with a malicious filename value, causing the server to return error messages containing absolute paths in the HTTP response.