H2
Product
h2o
by h2o · last CVE Jul 16, 2026
36
CVEs
0
On KEV
9.8
Max CVSS
0
New 30D
Severity mix
Critical 9High 20Medium 7Low 0
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Add h2o to your stack to get only the CVEs that touch what you run.

CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-8751
9.8
0%
May 17
h2oai h2o-3 JAR Model.java importBinaryModel deserialization
Affected: through 7402
CVE-2026-3960
9.8
1%
Apr 23
Remote Code Execution in h2oai/h2o-3
Affected: before 3.46.0.10
CVE-2025-10769
9.8
1%
Sep 21
h2oai h2o-3 H2 JDBC Driver ImportSQLTable deserialization
Affected: 3.0.0.2 through 3.46.0.8
CVE-2025-10768
9.8
0%
Sep 21
h2oai h2o-3 IBMDB2 JDBC Driver ImportSQLTable deserialization
Affected: 3.0.0.2 through 3.46.0.8
CVE-2025-6544
9.8
1%
Sep 21
Deserialization Vulnerability in h2oai/h2o-3
Affected: 3.0.0.2 through 3.46.0.8
CVE-2024-10553
9.8
2%
Mar 20
Jdbc Deserialization in h2oai/h2o-3
Affected: 3.46.0.4
CVE-2024-8862
9.8
1%
Sep 14
h2oai h2o-3 JDBC Connection 1 getConnectionSafe deserialization
Affected: 3.46.0.4
CVE-2023-6016
9.8
31%
Nov 16
H2O Remote Code Execution via POJO Model Import
Affected: All versions, or not specified
CVE-2024-45758
9.1
1%
Sep 6
H2O.ai H2O through 3.46.0.4 allows attackers to arbitrarily set the JDBC URL, leading to deserialization attacks, file reads, and command execution
Affected: through 3.46.0.4
CVE-2024-8616
8.2
1%
Mar 20
Arbitrary File Overwrite in h2oai/h2o-3
Affected: 3.46.0
CVE-2023-6569
8.2
1%
Dec 14
External Control of File Name or Path in h2oai/h2o-3
Affected: 3.40.0.4
CVE-2026-54340
7.5
0%
Jul 16
h2o has HTTP/2 state amplification
Affected: < 9265bdd
CVE-2026-44453
7.5
0%
Jul 16
h2o is vulnerable to musl libc stack overflow
Affected: < 6b5370d
CVE-2026-55213
7.5
0%
Jul 10
h2o: musl libc stack overflow (QPACK)
Affected: < edd7a120bfc4af11ac0cbebce2a43cc1f93f9af1
CVE-2026-8750
7.5
0%
May 17
h2oai h2o-3 ImportFile API PersistNFS.java importFiles information disclosure
Affected: through 7402
CVE-2024-10549
7.5
1%
Mar 20
Denial of Service by ReDOS in h2oai/h2o-3
Affected: 3.46.0.1
CVE-2024-8062
7.5
0%
Mar 20
Denial of Service in h2oai/h2o-3
Affected: 3.46.0
CVE-2024-7768
7.5
1%
Mar 20
Denial of Service in h2oai/h2o-3
Affected: 3.46.1
CVE-2024-10550
7.5
1%
Mar 20
Denial of Service by ReDOS in h2oai/h2o-3
Affected: 3.46.0.1
CVE-2024-10572
7.5
1%
Mar 20
Denial of Service and Arbitrary File Write in h2oai/h2o-3
Affected: 3.46.0.1
CVE-2024-7765
7.5
1%
Mar 20
Denial of Service in h2oai/h2o-3
Affected: 3.46.0.2
CVE-2024-45403
7.5
1%
Oct 11
H2O assertion failure when HTTP/3 requests are cancelled
Affected: >= 16b13eee8ad7895b4fe3fcbcabee53bd52782562, < 1ed32b23f999acf0c5029f09c8525f93eb1d354c
CVE-2024-45397
7.5
0%
Oct 11
H2O alllows bypassing address-based access control with 0-RTT
Affected: < 15ed15a2efb83a77bb4baaa5a119e639c2f6898a
CVE-2024-5979
7.5
1%
Jun 27
Denial of Service via Invalid Argument in h2oai/h2o-3
Affected: 3.46.0
CVE-2023-50247
7.5
1%
Dec 12
h2o QUIC state exhaustion DoS
Affected: <= 2.3.0-beta2
CVE-2023-6038
7.5
4%
Nov 16
Local File Inclusion in h2oai/h2o-3
Affected: All versions, or not specified
CVE-2024-6854
7.1
1%
Mar 20
Arbitrary File Overwrite in h2oai/h2o-3
Affected: 3.46.0
CVE-2024-1456
7.1
0%
Apr 16
S3 Bucket Takeover in h2oai/h2o-3
Affected: 3.45.0.6386
CVE-2023-6017
7.1
1%
Nov 16
H2O S3 Bucket Takeover
Affected: All versions, or not specified
CVE-2023-41337
6.7
0%
Dec 12
h2o vulnerable to TLS session resumption misdirection
Affected: <= 2.3.0-beta2
CVE-2024-6863
6.5
0%
Mar 20
Encryption of Arbitrary Files with Attacker-Controlled Key in h2oai/h2o-3
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 Local File Include
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
Exposure of Sensitive Information via Arbitrary System Path Lookup in h2oai/h2o-3
Affected: 3.40.0.4
CVE-2024-25622
4.3
0%
Oct 11
H2O ignores headers configuration directives
Affected: < 123f5e2b65dcdba8f7ef659a00d24bd1249141be
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