GitHub Advisoryadvisory · PyPI
GHSA-6wj5-5pgr-jwq8 Open WebUI Unauthenticated Multipart Boundary Denial of Service (DoS) Vulnerability in api/chat/file
HIGH
Official page ↗
- Ecosystem
- PyPI
- Packages
- open-webui
- Severity
- High
- CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-400
- Reviewed
- 2025-03-21
Affected packages
• PyPI open-webui: < 0.4.7 → fixed in 0.4.7
Description
A vulnerability in open-webui/open-webui version 79778fa allows an attacker to cause a Denial of Service (DoS) by uploading a file with a malformed multipart boundary. By appending a large number of characters to the end of the multipart boundary, the server continuously processes each character, rendering the application inaccessible. This issue can prevent all users from accessing the application until the server recovers.
Related
Weakness · CWE (1)
- CWE-400 Uncontrolled Resource Consumption weakness
References
- https://github.com/Kludex/python-multipart/security/advisories/GHSA-59g5-xgcq-4qw3 web
- https://nvd.nist.gov/vuln/detail/CVE-2024-53981 advisory
- https://github.com/open-webui/open-webui/commit/f311c03a21dc09e279a0cad7482a68b273517baf web
- https://github.com/open-webui/open-webui package
- https://huntr.com/bounties/15eb4fbe-70d4-420e-806a-ec6f4ecb7202 web