# CVE-2023-29449: Limited control of resource utilization in JS preprocessing

> Administrative users can cause resource exhaustion via JavaScript preprocessing, leading to denial of service in Zabbix.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 13 Jul 2023
- **Updated:** 3 Nov 2025
- **Also known as:** DEBIAN-CVE-2023-29449, GHSA-7q7m-r84j-6pm2, UBUNTU-CVE-2023-29449

## What is CVE-2023-29449?

CVE-2023-29449 is a medium-severity denial of service vulnerability in Zabbix Zabbix, published on 13 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

JavaScript preprocessing, webhooks and global scripts can cause uncontrolled CPU, memory, and disk I/O utilization. Preprocessing/webhook/global script configuration and testing are only available to Administrative roles (Admin and Superadmin). Administrative privileges should be typically granted to users who need to perform tasks that require more control over the system. The security risk is limited because not all users have this level of access.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling), CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2023-29449?

It affects 1 product.


Products: Zabbix Zabbix.

## How do I fix CVE-2023-29449?

Apply the vendor's patch.

## Is CVE-2023-29449 being exploited?

There is no known exploitation of CVE-2023-29449 in the wild and no public exploit code.

## Other vulnerabilities in Zabbix Zabbix

- [CVE-2022-23131](https://insights.sbomify.com/CVE-2022-23131/): Zabbix Frontend Authentication Bypass (critical 9.1, exploited in the wild)
- [CVE-2007-0640](https://insights.sbomify.com/CVE-2007-0640/): Memory corruption in n/a (critical 10.0)
- [CVE-2024-42327](https://insights.sbomify.com/CVE-2024-42327/): SQL injection in user.get API (critical 9.9)
- [CVE-2024-22116](https://insights.sbomify.com/CVE-2024-22116/): Remote code execution within ping script (critical 9.9)
- [CVE-2013-3738](https://insights.sbomify.com/CVE-2013-3738/): Code injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-29449 and fix it if it is affected.

What it is: CVE-2023-29449 is a medium-severity denial of service vulnerability in Zabbix Zabbix, published on 13 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-29449 in the wild and no public exploit code.

Affected product: Zabbix Zabbix. 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-2023-29449/ (Markdown: https://insights.sbomify.com/CVE-2023-29449/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-29449
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-29449
- OSV: https://osv.dev/vulnerability/CVE-2023-29449

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-29449/
Summaries are generated and may contain mistakes; the official description above is the record.