What is CVE-2023-51387?

CVE-2023-51387 is a high-severity vulnerability in Apache Hertzbeat, classified under Code Injection. CVSS score: 7.2/10. Published 2023-12-22.

How severe is CVE-2023-51387?

High severity. CVSS v3 base score is 7.2 out of 10.

RCE in Apache Hertzbeat

CVE-2023-51387

Hertzbeat is an open source, real-time monitoring system. Hertzbeat uses aviatorscript to evaluate alert expressions. The alert expressions are supposed to be some simple expressions. However, due to improper sanitization for alert expressions in version prior to 1.4.1, a malicious user can use a crafted alert expression to execute any command on hertzbeat server. A malicious user who has access to alert define function can execute any command in hertzbeat instance. This issue is fixed in version 1.4.1.

Vulnerability class: RCE (Remote Code Execution)

Published 2023-12-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.014 (72.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Apache Hertzbeat
Dromara Hertzbeat — versions < 1.4.1

Weakness classification (CWE)

CWE-94 — Code Injection

References

github.com/dromara/hertzbeat/security/advisories/GHSA-4576-m8px-w9qj (Exploit, Vendor Advisory)
github.com/dromara/hertzbeat/commit/8dcf050e27ca95d15460a7ba98a3df8a9cd1d3d2 (Patch)
github.com/dromara/hertzbeat/blob/6b599495763120ad1df6f4ed4b6713bb4885d8e2/home… (Release Notes)

Frequently asked questions

What is CVE-2023-51387?: CVE-2023-51387 is a high-severity vulnerability in Apache Hertzbeat, classified under Code Injection. CVSS score: 7.2/10. Published 2023-12-22.
How severe is CVE-2023-51387?: High severity. CVSS v3 base score is 7.2 out of 10.