# CVE-2021-36503: SQL injection in n/a

> Remote attackers can execute arbitrary SQL commands via the cat parameter in native-php-cms, potentially compromising database integrity and confidentiality.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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:** Not needed
- **Fix available:** No
- **Published:** 3 Feb 2023
- **Updated:** 27 Mar 2025
- **Also known as:** GHSA-53w3-ppjp-j9r6

## What is CVE-2021-36503?

CVE-2021-36503 is a critical SQL injection vulnerability in n/a, published on 3 Feb 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

SQL injection vulnerability in native-php-cms 1.0 allows remote attackers to run arbitrary SQL commands via the cat parameter to /list.php file.

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command)

## Which versions are affected by CVE-2021-36503?

It affects 1 product.


Products: Native-Php-Cms Project Native-Php-Cms.

## How do I fix CVE-2021-36503?

No fix has been published for CVE-2021-36503 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-36503 being exploited?

There is no known exploitation of CVE-2021-36503 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2025-0482](https://insights.sbomify.com/CVE-2025-0482/): Fanli2012 native-php-cms user_recoverpwd.php default credentials (medium 6.9)
- [CVE-2025-0483](https://insights.sbomify.com/CVE-2025-0483/): Fanli2012 native-php-cms jump.php cross site scripting (medium 5.3)
- [CVE-2025-0488](https://insights.sbomify.com/CVE-2025-0488/): Fanli2012 native-php-cms product_list.php sql injection (medium 5.3)
- [CVE-2025-0489](https://insights.sbomify.com/CVE-2025-0489/): Fanli2012 native-php-cms friendlink_dodel.php sql injection (medium 5.3)
- [CVE-2025-0490](https://insights.sbomify.com/CVE-2025-0490/): Fanli2012 native-php-cms article_dodel.php sql injection (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-36503 and fix it if it is affected.

What it is: CVE-2021-36503 is a critical SQL injection vulnerability in n/a, published on 3 Feb 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-2021-36503 in the wild and no public exploit code.

Affected product: n/a. 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-2021-36503/ (Markdown: https://insights.sbomify.com/CVE-2021-36503/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-36503
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-36503
- OSV: https://osv.dev/vulnerability/CVE-2021-36503

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-36503/
Summaries are generated and may contain mistakes; the official description above is the record.