CVE-2024-7983 json
Denial of Service in open-webui/open-webui
published 2025-03-20 19 mo ago modified 2026-07-23 3 mo ago also GHSA-5v9m-57mq-qc75 , PYSEC-2026-1723 , EUVD-2025-6928
- cvss
- 7.5
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 19 mo ago
Exploit prediction
0.88% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- huntr.com https://huntr.com/bounties/f8156ca5-1328-480f-a72b-8d3dfdad87dc referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| OSV | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | open-webui | <=0.3.8 <0.5.13 |
0.5.13 |
Affected products
- open-webui open-webui/open-webui
Classification
References
-
github.com
/open-webui/open-webui/commit/2f75eef499cc5cb48deb639cebebf86c405640bd
patch
-
huntr.com
/bounties/f8156ca5-1328-480f-a72b-8d3dfdad87dc
web, exploit, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2024-7983
advisory
-
github.com
/open-webui/open-webui
package
-
github.com
/open-webui/open-webui/blob/eff736acd2e0bbbdd0eeca4cc209b216a1f23b6a/backend/apps/webui/routers/utils.py#L49
web
-
pypi.org
/project/open-webui
package
-
github.com
/advisories/GHSA-5v9m-57mq-qc75
advisory
Sources
- CVE List CVE-2024-7983
- GitHub Advisory GHSA-5v9m-57mq-qc75
- NVD CVE-2024-7983
- OSV PYSEC-2026-1723
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.