# CVE-2021-20744: Cross-site scripting in EC-CUBE Category contents plugin (for EC-CUBE 3.0 series)

> Remote attackers can inject arbitrary scripts via a crafted page, potentially compromising administrator or user sessions in EC-CUBE.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **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:** 22 Jun 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-5c5r-8fp8-5g68

## What is CVE-2021-20744?

CVE-2021-20744 is a medium-severity cross-site scripting vulnerability in EC-CUBE Category contents plugin (for EC-CUBE 3.0 series), published on 22 Jun 2021. 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

Cross-site scripting vulnerability in EC-CUBE Category contents plugin (for EC-CUBE 3.0 series) versions prior to version 1.0.1 allows a remote attacker to inject an arbitrary script by leading an administrator or a user to a specially crafted page and to perform a specific operation.

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

## Which versions are affected by CVE-2021-20744?

It affects 1 product.


Products: Ec-Cube Business Form Output.

## How do I fix CVE-2021-20744?

No fix has been published for CVE-2021-20744 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-20744 being exploited?

There is no known exploitation of CVE-2021-20744 in the wild and no public exploit code.

## Other vulnerabilities in EC-CUBE Category contents plugin (for EC-CUBE 3.0 series)

- [CVE-2021-20742](https://insights.sbomify.com/CVE-2021-20742/): Cross-site scripting in EC-CUBE Business form output plugin (for EC-CUBE 3.0 series) (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-20744 and fix it if it is affected.

What it is: CVE-2021-20744 is a medium-severity cross-site scripting vulnerability in EC-CUBE Category contents plugin (for EC-CUBE 3.0 series), published on 22 Jun 2021. 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-2021-20744 in the wild and no public exploit code.

Affected product: EC-CUBE Category contents plugin (for EC-CUBE 3.0 series). 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-2021-20744/ (Markdown: https://insights.sbomify.com/CVE-2021-20744/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-20744
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-20744
- OSV: https://osv.dev/vulnerability/CVE-2021-20744

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-20744/
Summaries are generated and may contain mistakes; the official description above is the record.