H2
Product
h2o
by h2o · last CVE Jul 16, 2026
31
CVEs
0
On KEV
9.8
Max CVSS
0
New 30D
Severity mix
Critical 9High 17Medium 5Low 0
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2024-6863
6.5
0%
Mar 20
In h2oai/h2o-3 version 3.46.0, an endpoint exposing a custom EncryptionTool allows an attacker to encrypt any files on the target server with a key of their choosing
Affected: 3.46.0
CVE-2026-44452
5.9
0%
Jul 16
h2o is vulnerable to heap overrun
Affected: < 8dc37cb
CVE-2023-6013
5.4
1%
Nov 16
H2O is vulnerable to stored XSS vulnerability which can lead to a Local File Include attack
Affected: All versions, or not specified
CVE-2026-8752
5.3
0%
May 17
h2oai h2o-3 Rapids setproperty Primitive AstSetProperty.java exec access control
Affected: through 7402
CVE-2024-5550
5.3
1%
Jun 6
In h2oai/h2o-3 version 3.40.0.4, an exposure of sensitive information vulnerability exists due to an arbitrary system path lookup feature
Affected: 3.40.0.4
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