# CVE-2018-14421: Code injection in n/a

> Attackers can execute arbitrary PHP code by injecting it into video picture fields, leading to remote code execution on the server.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 19 Jul 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-m6xg-7cq6-qq76

## What is CVE-2018-14421?

CVE-2018-14421 is a high-severity code injection vulnerability in Seacms Seacms, published on 19 Jul 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

SeaCMS v6.61 allows Remote Code execution by placing PHP code in a movie picture address (aka v_pic) to /admin/admin_video.php (aka /backend/admin_video.php). The code is executed by visiting /details/index.php. This can also be exploited through CSRF.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2018-14421?

It affects 1 product.


Products: Seacms Seacms.

## How do I fix CVE-2018-14421?

No fix has been published for CVE-2018-14421 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-14421 being exploited?

There is no known exploitation of CVE-2018-14421 in the wild and no public exploit code.

## Other vulnerabilities in Seacms Seacms

- [CVE-2025-44073](https://insights.sbomify.com/CVE-2025-44073/): SQL injection in n/a (critical 9.8)
- [CVE-2025-44071](https://insights.sbomify.com/CVE-2025-44071/): Code injection in n/a (critical 9.8)
- [CVE-2025-44072](https://insights.sbomify.com/CVE-2025-44072/): SQL injection in n/a (critical 9.8)
- [CVE-2025-44074](https://insights.sbomify.com/CVE-2025-44074/): SQL injection in n/a (critical 9.8)
- [CVE-2025-29647](https://insights.sbomify.com/CVE-2025-29647/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-14421 and fix it if it is affected.

What it is: CVE-2018-14421 is a high-severity code injection vulnerability in Seacms Seacms, published on 19 Jul 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-14421 in the wild and no public exploit code.

Affected product: Seacms Seacms. 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-2018-14421/ (Markdown: https://insights.sbomify.com/CVE-2018-14421/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-14421
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-14421
- OSV: https://osv.dev/vulnerability/CVE-2018-14421

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-14421/
Summaries are generated and may contain mistakes; the official description above is the record.