Denial of Service in open-webui/open-webui
Published Mar 20, 2025
7.5
HIGHCVSS 3.0
EPSS 0.86%
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.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<=latest
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Open-Webui | Open-Webui/open-Webui | n/a |
|
- 0.3.8
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Mar 20, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2025-2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.86% (0.00860) | 57.08th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.78% (0.00782) | 51.02th | v5 (v2026.06.15) |
| Mar 20, 2025 | 0.08% (0.00077) | 20.41th | v4 (v2025.03.14) |
References (4)
- https://github.com/advisories/GHSA-5v9m-57mq-qc75 Advisory
- https://github.com/open-webui/open-webui/blob/eff736acd2e0bbbdd0eeca4cc209b216a1f23b6a/backend/apps/webui/routers/utils.py#L49
- https://huntr.com/bounties/f8156ca5-1328-480f-a72b-8d3dfdad87dc ExploitThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2024-7983
Change history (0)
No recorded changes yet.