# CVE-2023-51387: Expression Injection Vulnerability in Hertzbeat

> A malicious user with access to alert definition can execute arbitrary commands on the Hertzbeat server via crafted expressions.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Dec 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-4576-m8px-w9qj

## What is CVE-2023-51387?

CVE-2023-51387 is a high-severity code injection vulnerability in dromara hertzbeat, published on 22 Dec 2023. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

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.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2023-51387?

It affects 1 product.


Products: Apache Hertzbeat.

## How do I fix CVE-2023-51387?

No fix has been published for CVE-2023-51387 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-51387 being exploited?

There is no known exploitation of CVE-2023-51387 in the wild and no public exploit code.

## Other vulnerabilities in dromara hertzbeat

- [CVE-2023-51388](https://insights.sbomify.com/CVE-2023-51388/): HertzBeat AviatorScript Inject RCE (critical 9.8)
- [CVE-2023-51389](https://insights.sbomify.com/CVE-2023-51389/): HertzBeat SnakeYAML Deser RCE (critical 9.8)
- [CVE-2023-51653](https://insights.sbomify.com/CVE-2023-51653/): Hertzbeat JMX JNDI RCE (critical 9.8)
- [CVE-2026-24343](https://insights.sbomify.com/CVE-2026-24343/): Apache HertzBeat: Uncontrolled Resource Consumption via Crafted XPath Expressions (high 8.8)
- [CVE-2025-24404](https://insights.sbomify.com/CVE-2025-24404/): Apache HertzBeat (incubating): RCE by parse http sitemap xml response (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-51387 and fix it if it is affected.

What it is: CVE-2023-51387 is a high-severity code injection vulnerability in dromara hertzbeat, published on 22 Dec 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-51387 in the wild and no public exploit code.

Affected product: dromara hertzbeat. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2023-51387/ (Markdown: https://insights.sbomify.com/CVE-2023-51387/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-51387
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-51387
- OSV: https://osv.dev/vulnerability/CVE-2023-51387

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-51387/
Summaries are generated and may contain mistakes; the official description above is the record.