# CVE-2022-4300: FastCMS Template edit injection

> Remote attackers can execute arbitrary code via injection in the FastCMS template editing feature.

- **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:** No
- **Published:** 6 Dec 2022
- **Updated:** 15 Apr 2025
- **Also known as:** GHSA-8794-4h24-66xp

## What is CVE-2022-4300?

CVE-2022-4300 is a medium-severity code injection vulnerability in unspecified FastCMS, published on 6 Dec 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was found in FastCMS. It has been rated as critical. This issue affects some unknown processing of the file /template/edit of the component Template Handler. The manipulation leads to injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-214901 was assigned to this vulnerability.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-707 (Improper Neutralization)

## Which versions are affected by CVE-2022-4300?

It affects 1 product.


Products: Xjd2020 Fastcms.

## How do I fix CVE-2022-4300?

No fix has been published for CVE-2022-4300 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-4300 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-4300 exists.

## Other vulnerabilities in unspecified FastCMS

- [CVE-2026-26682](https://insights.sbomify.com/CVE-2026-26682/): An issue in fastCMS before v.0.1.6 allows a local attacker to execute arbitrary code via the PluginController.java component (high 7.8)
- [CVE-2025-2593](https://insights.sbomify.com/CVE-2025-2593/): FastCMS list sql injection (medium 5.3)
- [CVE-2024-7733](https://insights.sbomify.com/CVE-2024-7733/): FastCMS New Article Category Page cross site scripting (medium 5.3)
- [CVE-2023-1111](https://insights.sbomify.com/CVE-2023-1111/): FastCMS New Article Tab cross site scripting (medium 5.1)
- [CVE-2025-1332](https://insights.sbomify.com/CVE-2025-1332/): FastCMS Template Menu menu cross site scripting (medium 4.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-4300 and fix it if it is affected.

What it is: CVE-2022-4300 is a medium-severity code injection vulnerability in unspecified FastCMS, published on 6 Dec 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-4300 exists.

Affected product: unspecified FastCMS. 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-2022-4300/ (Markdown: https://insights.sbomify.com/CVE-2022-4300/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-4300
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-4300
- OSV: https://osv.dev/vulnerability/CVE-2022-4300

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-4300/
Summaries are generated and may contain mistakes; the official description above is the record.