How severe is CVE-2023-51388?

CVE-2023-51388 has a CVSS 3.x base score of 9.8, 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 high.

Is CVE-2023-51388 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-51388?

CVE-2023-51388 affects Apache Hertzbeat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-51388?

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-2023-51388 have an EU (EUVD) identifier?

Yes. CVE-2023-51388 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56109.

When was CVE-2023-51388 published?

CVE-2023-51388 was published on 2024-02-22 and last updated on 2026-06-17.

CVE-2023-51388

CVE-2023-51388 is a critical-severity vulnerability in Apache Hertzbeat with a CVSS 3.x base score of 9.8. 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-74.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-56109
Weakness: CWE-74
Affected product: Apache Hertzbeat
Published: 2024-02-22
Last modified: 2026-06-17

Description

Hertzbeat is a real-time monitoring system. In `CalculateAlarm.java`, `AviatorEvaluator` is used to directly execute the expression function, and no security policy is configured, resulting in AviatorScript (which can execute any static method by default) script injection. Version 1.4.1 fixes this vulnerability.

Frequently asked questions

What is CVE-2023-51388?: Hertzbeat is a real-time monitoring system. In `CalculateAlarm.java`, `AviatorEvaluator` is used to directly execute the expression function, and no security policy is configured, resulting in AviatorScript (which can execute any static method by default) script injection. Version 1.4.1 fixes this vulnerability.
How severe is CVE-2023-51388?: CVE-2023-51388 has a CVSS 3.x base score of 9.8, 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 high.
Is CVE-2023-51388 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-51388?: CVE-2023-51388 affects Apache Hertzbeat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-51388?: 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-2023-51388 have an EU (EUVD) identifier?: Yes. CVE-2023-51388 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56109.
When was CVE-2023-51388 published?: CVE-2023-51388 was published on 2024-02-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apache:hertzbeat:*:*:*:*:*:*:*:*

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