AI and data stack advisories

Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

Open WebUIGHSA-5v9m-57mq-qc75

Open WebUI denial of service through endpoint for converting markdown

Open WebUI

CVE-2024-7983 · Published Mar 20, 2025 · updated Jul 7, 2026

High7.5
No fix yet
GitHub advisory

In version 0.3.8 of open-webui, an endpoint for converting markdown to HTML is exposed without authentication. A maliciously crafted markdown payload can cause the server to spend excessive time converting it, leading to a denial of service. The server becomes unresponsive to other requests until the conversion is complete.

Affected versions

PackageAffectedFixed in
open-webui
PyPI
<= 0.3.8No fix yet
Details and references
CVSS 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity from
GitHub (reviewed advisory)
Weakness
CWE-400, CWE-770
Also known as
CVE-2024-7983, PYSEC-2026-1723

More Open WebUI advisories

All Open WebUI
High 7.5Mar 20, 2025Open WebUI Unauthenticated Multipart Boundary Denial of Service (DoS) VulnerabilityGHSA-5ccf-884p-4jjqno fix yetHigh 7.5Mar 20, 2025Open WebUI lacks authentication for the `api/v1/utils/pdf` endpointCVE-2024-8053no fix yetHigh 8.1Mar 20, 2025Open WebUI allows Remote Code Execution via Arbitrary File Upload to /audio/api/v1/transcriptionsCVE-2024-8060fixed in 0.5.17High 8.4Mar 20, 2025Open WebUI stored cross-site scripting (XSS) vulnerabilityCVE-2024-7990no fix yetHigh 7.6Mar 20, 2025Open WebUI Vulnerable to a Session Fixation AttackCVE-2024-7053no fix yetHigh 7.5Mar 20, 2025Open WebUI Unauthenticated Multipart Boundary Denial of Service (DoS) Vulnerability in api/chat/fileGHSA-6wj5-5pgr-jwq8fixed in 0.4.7