# CVE-2023-29458: Duktape 2.6 bug crashes JavaScript putting too many values in valstack.

> An attacker can cause a denial of service by triggering a crash in the Duktape JavaScript engine through excessive stack values.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **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-2023-29458, GHSA-7rx9-h3cp-pvq7, UBUNTU-CVE-2023-29458

## What is CVE-2023-29458?

CVE-2023-29458 is a medium-severity denial of service vulnerability in Zabbix Zabbix, published on 13 Jul 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Duktape is an 3rd-party embeddable JavaScript engine, with a focus on portability and compact footprint. When adding too many values in valstack JavaScript will crash. This issue occurs due to bug in Duktape 2.6 which is an 3rd-party solution that we use.

Weakness: CWE-129 (Improper Validation of Array Index)

## Which versions are affected by CVE-2023-29458?

It affects 1 product.


Products: Zabbix Zabbix.

## How do I fix CVE-2023-29458?

Upgrade to a fixed version.

## Is CVE-2023-29458 being exploited?

There is no known exploitation of CVE-2023-29458 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-2023-29458 and fix it if it is affected.

What it is: CVE-2023-29458 is a medium-severity denial of service vulnerability in Zabbix Zabbix, published on 13 Jul 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-29458 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-2023-29458/ (Markdown: https://insights.sbomify.com/CVE-2023-29458/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-29458
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-29458
- OSV: https://osv.dev/vulnerability/CVE-2023-29458

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-29458/
Summaries are generated and may contain mistakes; the official description above is the record.