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CVE-2024-8062

Denial of Service in h2oai/h2o-3

7.5 High

A vulnerability in the typeahead endpoint of h2oai/h2o-3 version 3.46.0 allows for a denial of service. The endpoint performs a HEAD request to verify the existence of a specified resource without setting a timeout. An attacker can exploit this by sending multiple requests to an attacker-controlled server that hangs, causing the application to block and become unresponsive to other requests.

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

0.48%Up 0.4 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

A vulnerability in the typeahead endpoint of h2oai/h2o-3 version 3.46.0 allows for a denial of service. The endpoint performs a HEAD request to verify the existence of a specified resource without setting a timeout. An attacker can exploit this by sending multiple requests to an attacker-controlled server that hangs, causing the application to block and become unresponsive to other requests.

Record
CVE-2024-8062
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-1088
Updated
2026-11-02
EUVDEUVD-2025-6929 7.5

A vulnerability in the typeahead endpoint of h2oai/h2o-3 version 3.46.0 allows for a denial of service. The endpoint performs a HEAD request to verify the existence of a specified resource without setting a timeout. An attacker can exploit this by sending multiple requests to an attacker-controlled server that hangs, causing the application to block and become unresponsive to other requests.

Record
EUVD-2025-6929
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-5c8j-g96x-cj78 7.5

H2O Vulnerable to Denial of Service (DoS) via `HEAD` Request

A vulnerability in the typeahead endpoint of h2oai/h2o-3 version 3.46.0 allows for a denial of service. The endpoint performs a HEAD request to verify the existence of a specified resource without setting a timeout. An attacker can exploit this by sending multiple requests to an attacker-controlled server that hangs, causing the application to block and become unresponsive to other requests.

Record
GHSA-5c8j-g96x-cj78
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-1088
Updated
2026-11-02
NVD 7.5

A vulnerability in the typeahead endpoint of h2oai/h2o-3 version 3.46.0 allows for a denial of service. The endpoint performs a HEAD request to verify the existence of a specified resource without setting a timeout. An attacker can exploit this by sending multiple requests to an attacker-controlled server that hangs, causing the application to block and become unresponsive to other requests.

Record
CVE-2024-8062
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-1088
Updated
2026-11-02
OSVGHSA-5c8j-g96x-cj78 7.5

H2O Vulnerable to Denial of Service (DoS) via `HEAD` Request

A vulnerability in the typeahead endpoint of h2oai/h2o-3 version 3.46.0 allows for a denial of service. The endpoint performs a HEAD request to verify the existence of a specified resource without setting a timeout. An attacker can exploit this by sending multiple requests to an attacker-controlled server that hangs, causing the application to block and become unresponsive to other requests.

Record
GHSA-5c8j-g96x-cj78
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-1088
Updated
2026-11-02
OSVPYSEC-2026-1438 7.5

H2O Vulnerable to Denial of Service (DoS) via `HEAD` Request

A vulnerability in the typeahead endpoint of h2oai/h2o-3 version 3.46.0 allows for a denial of service. The endpoint performs a HEAD request to verify the existence of a specified resource without setting a timeout. An attacker can exploit this by sending multiple requests to an attacker-controlled server that hangs, causing the application to block and become unresponsive to other requests.

Record
PYSEC-2026-1438
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
 3.2.0.1 to 3.46.0 None known
ai.h2o:h2o-core
Maven
 3.2.0.1 to 3.46.0 None known
h2o
PyPI
 3.2.0.1 to 3.46.0, plus listed versions
3.10.0.103.10.0.33.10.0.63.10.0.73.10.0.8
Show 45 moreShow less
3.10.3.33.10.3.43.10.4.13.10.4.23.10.4.33.10.4.43.10.4.63.10.4.83.16.0.13.16.0.23.16.0.33.16.0.43.18.0.13.18.0.103.18.0.113.18.0.23.18.0.33.18.0.43.18.0.53.18.0.63.18.0.73.18.0.83.18.0.93.20.0.43.20.0.53.20.0.63.20.0.73.20.0.83.22.0.13.22.0.23.22.0.33.22.0.43.22.0.53.22.1.13.22.1.23.22.1.33.22.1.43.22.1.53.22.1.63.24.0.13.24.0.23.24.0.33.24.0.43.24.0.53.26.0.1
 None known
ai.h2o:h2o-core
Maven
 3.2.0.1 to 3.46.0, plus listed versions
3.10.0.13.10.0.103.10.0.23.10.0.33.10.0.4
Show 45 moreShow less
3.10.0.53.10.0.63.10.0.73.10.0.83.10.0.93.10.1.13.10.1.23.10.2.13.10.2.23.10.3.13.10.3.23.10.3.33.10.3.43.10.3.53.10.3.63.10.4.13.10.4.113.10.4.123.10.4.23.10.4.33.10.4.43.10.4.53.10.4.63.10.4.73.10.4.83.10.4.93.10.5.13.10.5.23.10.5.33.10.5.43.12.0.13.14.0.13.14.0.23.14.0.33.14.0.43.14.0.53.14.0.63.14.0.73.16.0.13.16.0.103.16.0.113.16.0.123.16.0.23.16.0.33.16.0.4
 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-2024-8062 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 0.48%, the 41st percentile. No source names a fixed version.

References

This page doesn't list everything

Left out here: 217 versions. The JSON record has them.

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