# CVE-2020-13873: SQL injection in n/a

> Remote attackers can exploit SQL injection to bypass admin authentication and execute arbitrary code via PHP shell upload.

- **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:** 12 May 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-hh89-v8x4-q57w

## What is CVE-2020-13873?

CVE-2020-13873 is a critical SQL injection vulnerability in n/a, published on 12 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A SQL Injection vulnerability in get_topic_info() in sys/CODOF/Forum/Topic.php in Codoforum before 4.9 allows remote attackers (pre-authentication) to bypass the admin page via a leaked password-reset token of the admin. (As an admin, an attacker can upload a PHP shell and execute remote code on the operating system.)

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

## Which versions are affected by CVE-2020-13873?

It affects 1 product.


Products: Codologic Codoforum.

## How do I fix CVE-2020-13873?

No fix has been published for CVE-2020-13873 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-13873 being exploited?

There is no known exploitation of CVE-2020-13873 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2020-22539](https://insights.sbomify.com/CVE-2020-22539/): File upload in n/a (high 7.2)
- [CVE-2022-31854](https://insights.sbomify.com/CVE-2022-31854/): File upload in n/a (high 7.2)
- [CVE-2020-7051](https://insights.sbomify.com/CVE-2020-7051/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2020-5842](https://insights.sbomify.com/CVE-2020-5842/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2020-22540](https://insights.sbomify.com/CVE-2020-22540/): Cross-site scripting in n/a (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-13873 and fix it if it is affected.

What it is: CVE-2020-13873 is a critical SQL injection vulnerability in n/a, published on 12 May 2021. 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-2020-13873 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-2020-13873/ (Markdown: https://insights.sbomify.com/CVE-2020-13873/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-13873
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-13873
- OSV: https://osv.dev/vulnerability/CVE-2020-13873

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-13873/
Summaries are generated and may contain mistakes; the official description above is the record.