# CVE-2021-20778: Missing authorization in EC-CUBE

> Remote attackers can bypass access restrictions to obtain sensitive information in EC-CUBE e-commerce platform.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Jul 2021
- **Updated:** 3 Aug 2024

## What is CVE-2021-20778?

CVE-2021-20778 is a high-severity missing authorization vulnerability in EC-CUBE, published on 1 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Improper access control vulnerability in EC-CUBE 4.0.6 (EC-CUBE 4 series) allows a remote attacker to bypass access restriction and obtain sensitive information via unspecified vectors.

## Which versions are affected by CVE-2021-20778?

It affects 1 product.


Products: Ec-Cube Ec-Cube.

## How do I fix CVE-2021-20778?

No fix has been published for CVE-2021-20778 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-20778 being exploited?

There is no known exploitation of CVE-2021-20778 in the wild and no public exploit code.

## Other vulnerabilities in EC-CUBE

- [CVE-2020-5590](https://insights.sbomify.com/CVE-2020-5590/): EC-CUBE Directory traversal vulnerability (high 8.1)
- [CVE-2020-5680](https://insights.sbomify.com/CVE-2020-5680/): EC-CUBE Improper input validation vulnerability (high 7.5)
- [CVE-2008-4991](https://insights.sbomify.com/CVE-2008-4991/): SQL injection in n/a (high 7.5)
- [CVE-2008-4534](https://insights.sbomify.com/CVE-2008-4534/): SQL injection in n/a (high 7.5)
- [CVE-2023-46845](https://insights.sbomify.com/CVE-2023-46845/): Code injection in EC-CUBE 3 series (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-20778 and fix it if it is affected.

What it is: CVE-2021-20778 is a high-severity missing authorization vulnerability in EC-CUBE, published on 1 Jul 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-2021-20778 in the wild and no public exploit code.

Affected product: EC-CUBE. 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-2021-20778/ (Markdown: https://insights.sbomify.com/CVE-2021-20778/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-20778
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-20778
- OSV: https://osv.dev/vulnerability/CVE-2021-20778

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-20778/
Summaries are generated and may contain mistakes; the official description above is the record.