How severe is CVE-2023-51389?

CVE-2023-51389 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-2023-51389 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-2023-51389?

CVE-2023-51389 affects Apache Hertzbeat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-51389?

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-2023-51389 have an EU (EUVD) identifier?

Yes. CVE-2023-51389 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56110.

When was CVE-2023-51389 published?

CVE-2023-51389 was published on 2024-02-22 and last updated on 2026-06-17.

CVE-2023-51389

CVE-2023-51389 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-502.

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-2023-56110
Weakness: CWE-502
Affected product: Apache Hertzbeat
Published: 2024-02-22
Last modified: 2026-06-17

Description

Hertzbeat is a real-time monitoring system. At the interface of `/define/yml`, SnakeYAML is used as a parser to parse yml content, but no security configuration is used, resulting in a YAML deserialization vulnerability. Version 1.4.1 fixes this vulnerability.

Frequently asked questions

What is CVE-2023-51389?: Hertzbeat is a real-time monitoring system. At the interface of `/define/yml`, SnakeYAML is used as a parser to parse yml content, but no security configuration is used, resulting in a YAML deserialization vulnerability. Version 1.4.1 fixes this vulnerability.
How severe is CVE-2023-51389?: CVE-2023-51389 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-2023-51389 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-2023-51389?: CVE-2023-51389 affects Apache Hertzbeat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-51389?: 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-2023-51389 have an EU (EUVD) identifier?: Yes. CVE-2023-51389 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-56110.
When was CVE-2023-51389 published?: CVE-2023-51389 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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