CVE-2024-10553Critical· 9.8▾ MidnightH2O Deserialization of Untrusted Data Vulnerability
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · likelihood 0.3 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 27.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
1.6%
A vulnerability in the h2oai/h2o-3 REST API versions 3.46.0.4 allows unauthenticated remote attackers to execute arbitrary code via deserialization of untrusted data. The vulnerability exists in the endpoints POST /99/ImportSQLTable and POST /3/SaveToHiveTable, where user-controlled JDBC URLs are passed to DriverManager.getConnection, leading to deserialization if a MySQL or PostgreSQL driver is available in the classpath. This issue is fixed in version 3.46.0.6.
h2o < 3.46.0.6ai.h2o:h2o-core < 3.46.0.6Upgrade to a patched release:
h2o 3.46.0.6ai.h2o:h2o-core 3.46.0.6Connected by shared product, vendor, weakness, or advisory.
CVE-2025-6544Critical· 9.8A deserialization vulnerability exists in h2oai/h2o-3 versions <= 3.46.0.8, allowing attackers to read arbitrary system files and execute arbitrary code
CVE-2023-6569Critical· 9.3External Control of File Name or Path in h2oai/h2o-3
CVE-2024-45758Critical· 9.1H2O.ai H2O vulnerable to deserialization attacks via a JDBC Connection URL
CVE-2025-10768Medium· 6.3A flaw has been found in h2oai h2o-3 up to 3.46.08
CVE-2024-5550Medium· 5.3Arbitrary system path lookup in h20
CVE-2024-10549High· 7.5H2O Vulnerable to Denial of Service (DoS) via `/3/Parse` Endpoint