# CVE-2023-29457: Insufficient validation of Action form input fields

> Attackers can execute malicious scripts in victims' browsers via reflected XSS in Zabbix Action form fields, potentially leading to account takeover.

- **Severity:** Medium 6.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **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-2023-29457, GHSA-v4vr-xhx7-pmfv, UBUNTU-CVE-2023-29457

## What is CVE-2023-29457?

CVE-2023-29457 is a medium-severity cross-site scripting vulnerability in Zabbix, published on 13 Jul 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Reflected XSS attacks, occur when a malicious script is reflected off a web application to the victim's browser. The script can be activated through Action form fields, which can be sent as request to a website with a vulnerability that enables execution of malicious scripts.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2023-29457?

It affects 1 product.


Products: Zabbix Frontend.

## How do I fix CVE-2023-29457?

Apply the vendor's patch.

## Is CVE-2023-29457 being exploited?

There is no known exploitation of CVE-2023-29457 in the wild and no public exploit code.

## Other vulnerabilities in Zabbix

- [CVE-2023-32725](https://insights.sbomify.com/CVE-2023-32725/): Leak of zbx_session cookie when using a scheduled report that includes a dashboard with a URL widget. (critical 9.6)
- [CVE-2025-27232](https://insights.sbomify.com/CVE-2025-27232/): Frontend arbitrary file read in oauth.authorize action (medium 6.8)
- [CVE-2025-49643](https://insights.sbomify.com/CVE-2025-49643/): Frontend DoS vulnerability due to asymmetric resource consumption (medium 6.0)
- [CVE-2023-29456](https://insights.sbomify.com/CVE-2023-29456/): Inefficient URL schema validation (medium 5.7)
- [CVE-2023-29454](https://insights.sbomify.com/CVE-2023-29454/): Persistent XSS in the user form (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-29457 and fix it if it is affected.

What it is: CVE-2023-29457 is a medium-severity cross-site scripting vulnerability in 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-2023-29457 in the wild and no public exploit code.

Affected product: 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-2023-29457/ (Markdown: https://insights.sbomify.com/CVE-2023-29457/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-29457
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-29457
- OSV: https://osv.dev/vulnerability/CVE-2023-29457

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-29457/
Summaries are generated and may contain mistakes; the official description above is the record.