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CVE-2024-7765

Denial of Service in h2oai/h2o-3

7.5 High

In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.78%Up 0.7 points since Mar 20, 2025
90%50%10%1%

What each source reports

CVE List Score used 7.5

Denial of Service in h2oai/h2o-3

In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.

Record
CVE-2024-7765
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-409
Updated
2026-11-02
EUVDEUVD-2025-6953 7.5

In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.

Record
EUVD-2025-6953
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-6w62-3jvj-mfj6 7.5

H2O Vulnerable to Denial of Service (DoS) via Large GZIP Parsing

In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.

Record
GHSA-6w62-3jvj-mfj6
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-409
Updated
2026-11-02
NVD 7.5

In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.

Record
CVE-2024-7765
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-409
Updated
2026-11-02
OSV 7.5

Denial of Service in h2oai/h2o-3

In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.

Record
CVE-2024-7765
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-409
Updated
2026-11-02
OSVGHSA-6w62-3jvj-mfj6 7.5

H2O Vulnerable to Denial of Service (DoS) via Large GZIP Parsing

In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.

Record
GHSA-6w62-3jvj-mfj6
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-409
Updated
2026-11-02
OSVPYSEC-2026-1439 7.5

H2O Vulnerable to Denial of Service (DoS) via Large GZIP Parsing

In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.

Record
PYSEC-2026-1439
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
h2o
PyPI
 3.32.1.2 to 3.46.0.2 None known
ai.h2o:h2o-core
Maven
 3.32.1.2 to 3.46.0.2 None known
h2o
PyPI
 3.32.1.2 to 3.46.0.2, plus listed versions
3.32.1.33.32.1.43.32.1.53.32.1.63.32.1.7
Show 27 moreShow less
3.34.0.33.34.0.73.34.0.83.36.0.23.36.0.33.36.0.43.36.1.13.36.1.23.36.1.33.36.1.43.36.1.53.38.0.13.38.0.23.38.0.33.38.0.43.40.0.13.40.0.23.40.0.33.40.0.43.42.0.13.42.0.23.42.0.33.42.0.43.44.0.13.44.0.23.44.0.33.46.0.1
 None known
ai.h2o:h2o-core
Maven
 3.32.1.2 to 3.46.0.2, plus listed versions
3.32.1.33.32.1.43.32.1.53.32.1.63.32.1.7
Show 33 moreShow less
3.34.0.13.34.0.33.34.0.43.34.0.53.34.0.63.34.0.73.34.0.83.35.0.23.36.0.13.36.0.23.36.0.33.36.0.43.36.1.13.36.1.23.36.1.33.36.1.43.36.1.53.38.0.13.38.0.23.38.0.33.38.0.43.40.0.13.40.0.23.40.0.33.40.0.43.42.0.13.42.0.23.42.0.33.42.0.43.44.0.13.44.0.23.44.0.33.46.0.1
 None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-7765 is a high vulnerability (CVSS 7.5) in H2o, published March 20, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.78%, the 56th percentile. No source names a fixed version.

References

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