External Control of File Name or Path in h2oai/h2o-3

published 2023-12-14 2 y ago modified 2026-10-27 12 d ago also GHSA-gqrq-j6pm-98c2 , PYSEC-2026-350 , EUVD-2023-3215

cvss: 9.3; 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 54%
public exploits: 0; none known

Patch / fix

fixed in 1 links 1

pypi h2o 3.46.0.1

github.com/h2oai/h2o-3@e8884f5 commit

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: partial
Assessed: 17 mo ago (2025-05-22)

Exploit prediction

0.72% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

huntr.com https://huntr.com/bounties/a5d003dc-c23e-4c98-8dcf-35ba9252fa3c referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.0	9.3	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H
NVD	3.1	8.2	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
GitHub	3.0	9.3	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H
OSV	3.0	9.3	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:H

Affected packages

ecosystem	package	affected	fixed in
pypi	h2o	<3.46.0.1	3.46.0.1

Affected products

h2oai h2oai/h2o-3

Classification

Weakness

CWE-73 External Control of File Name or Path
CWE-610 Externally Controlled Reference to a Resource in Another Sphere

References

github.com /h2oai/h2o-3/commit/e8884f5187eb81311877c5f0dd4d6d9c70f33d78
web
huntr.com /bounties/a5d003dc-c23e-4c98-8dcf-35ba9252fa3c
web, exploit
nvd.nist.gov /vuln/detail/CVE-2023-6569
advisory
github.com /h2oai/h2o-3
package
github.com /pypa/advisory-database/tree/main/vulns/h2o/PYSEC-2026-350.yaml
web
pypi.org /project/h2o
web, package
github.com /advisories/GHSA-gqrq-j6pm-98c2
advisory

Sources

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.

Summary