How severe is CVE-2024-45758?

CVE-2024-45758 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2024-45758 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-45758?

CVE-2024-45758 affects H2o. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-45758?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-45758 have an EU (EUVD) identifier?

Yes. CVE-2024-45758 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-41584.

When was CVE-2024-45758 published?

CVE-2024-45758 was published on 2024-09-06 and last updated on 2026-06-17.

CVE-2024-45758

CVE-2024-45758 is a critical-severity vulnerability in H2o with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-41584
Weakness: CWE-502
Affected product: H2o
Published: 2024-09-06
Last modified: 2026-06-17

Description

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. Exploitation can occur when an attacker has access to post to the ImportSQLTable URI with a JSON document containing a connection_url property with any typical JDBC Connection URL attack payload such as one that uses queryInterceptors.

Frequently asked questions

What is CVE-2024-45758?: 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. Exploitation can occur when an attacker has access to post to the ImportSQLTable URI with a JSON document containing a connection_url property with any typical JDBC Connection URL attack payload such as one that uses queryInterceptors.
How severe is CVE-2024-45758?: CVE-2024-45758 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2024-45758 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-45758?: CVE-2024-45758 affects H2o. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-45758?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-45758 have an EU (EUVD) identifier?: Yes. CVE-2024-45758 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-41584.
When was CVE-2024-45758 published?: CVE-2024-45758 was published on 2024-09-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:h2o:h2o:*:*:*:*:*:*:*:*

More vulnerabilities in H2o

CVE-2026-3960 — Critical (CVSS 9.8): A critical remote code execution vulnerability exists in the unauthenticated REST API endpoint /99/ImportSQLTable in…
CVE-2025-6544 — Critical (CVSS 9.8): A deserialization vulnerability exists in h2oai/h2o-3 versions <= 3.46.0.8, allowing attackers to read arbitrary system…
CVE-2024-10553 — Critical (CVSS 9.8): A vulnerability in the h2oai/h2o-3 REST API versions 3.46.0.4 allows unauthenticated remote attackers to execute…
CVE-2023-6016 — Critical (CVSS 9.8): An attacker is able to gain remote code execution on a server hosting the H2O dashboard through it's POJO model import…
CVE-2024-8616 — High (CVSS 8.2): In h2oai/h2o-3 version 3.46.0, the `/99/Models/{name}/json` endpoint allows for arbitrary file overwrite on the target…
CVE-2023-6569 — High (CVSS 8.2): External Control of File Name or Path in h2oai/h2o-3

All CVEs affecting H2o →

Other CWE-502 (Deserialization of Untrusted Data) vulnerabilities

CVE-2026-41104 — Critical (CVSS 10.0): Deserialization of untrusted data in Microsoft Planetary Computer Pro allows an unauthorized attacker to disclose…
CVE-2026-43633 — Critical (CVSS 10.0): HestiaCP versions 1.9.0 through 1.9.4 contain a deserialization vulnerability in the web terminal component caused by a…
CVE-2026-33819 — Critical (CVSS 10.0): Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.
CVE-2026-20131 — Critical (CVSS 10.0): A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software could…
CVE-2026-25632 — Critical (CVSS 10.0): EPyT-Flow is a Python package designed for the easy generation of hydraulic and water quality scenario data of water…
CVE-2025-14931 — Critical (CVSS 10.0): Hugging Face smolagents Remote Python Executor Deserialization of Untrusted Data Remote Code Execution Vulnerability.…

Browse all CWE-502 (Deserialization of Untrusted Data) vulnerabilities →