CVE-2024-5986 json
Remote Arbitrary File Write with Arbitrary Data in h2oai/h2o-3
published 2026-02-02 9 mo ago modified 2026-10-27 12 d ago also GHSA-wj3h-wx8g-x699 , PYSEC-2026-353 , EUVD-2024-55393
- cvss
- 9.1
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
A vulnerability in h2oai/h2o-3 version 3.46.0.1 allows remote attackers to write arbitrary data to any file on the server. This is achieved by exploiting the `/3/Parse` endpoint to inject attacker-controlled data as the header of an empty file, which is then exported using the `/3/Frames/framename/export` endpoint. The impact of this vulnerability includes the potential for remote code execution and complete access to the system running h2o-3, as attackers can overwrite critical files such as private SSH keys or script files.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 9 mo ago
Exploit prediction
0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 9.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
| GitHub | 3.0 | 9.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
| OSV | 3.0 | 9.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | ai.h2o:h2o-core | <=3.46.0.1 |
no fix listed |
| pypi | h2o | <=3.46.0.1 |
no fix listed |
Affected products
- h2oai h2oai/h2o-3
Classification
- Weakness
-
- CWE-73 External Control of File Name or Path
References
-
huntr.com
/bounties/64ff5319-6ac3-4447-87f7-b53495d4d5a3
web
-
nvd.nist.gov
/vuln/detail/CVE-2024-5986
advisory
-
github.com
/h2oai/h2o-3
package
-
github.com
/pypa/advisory-database/tree/main/vulns/h2o/PYSEC-2026-353.yaml
web
-
pypi.org
/project/h2o
web, package
-
github.com
/advisories/GHSA-wj3h-wx8g-x699
advisory
Sources
- CVE List CVE-2024-5986
- GitHub Advisory GHSA-wj3h-wx8g-x699
- NVD CVE-2024-5986
- OSV PYSEC-2026-353
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