# CVE-2018-0657: Cross-site scripting in EC-CUBE Payment Module and GMO-PG Payment Module (PG Multi-Payment Service) for EC-CUBE

> An administrator can inject arbitrary web script or HTML into EC-CUBE payment modules, potentially compromising user sessions or data.

- **Severity:** Medium 4.8 (`CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 7 Sep 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-m5c7-hj9h-wm2m

## What is CVE-2018-0657?

CVE-2018-0657 is a medium-severity cross-site scripting vulnerability in EC-CUBE Payment Module and GMO-PG Payment Module (PG Multi-Payment Service) for EC-CUBE, published on 7 Sep 2018. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

Cross-site scripting vulnerability in EC-CUBE Payment Module and GMO-PG Payment Module (PG Multi-Payment Service) for EC-CUBE (EC-CUBE Payment Module (2.12) version 3.5.23 and earlier, EC-CUBE Payment Module (2.11) version 2.3.17 and earlier, GMO-PG Payment Module (PG Multi-Payment Service) (2.12) version 3.5.23 and earlier, and GMO-PG Payment Module (PG Multi-Payment Service) (2.11) version 2.3.17 and earlier) allow an attacker with administrator rights to inject arbitrary web script or HTML via unspecified vectors.

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

## Which versions are affected by CVE-2018-0657?

It affects 2 products.


Products: Ec-Cube Ec-Cube Payment Module, Gmo-Pg Gmo-Pg Payment Module.

## How do I fix CVE-2018-0657?

No fix has been published for CVE-2018-0657 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0657 being exploited?

There is no known exploitation of CVE-2018-0657 in the wild and no public exploit code.

## Other vulnerabilities in EC-CUBE Payment Module and GMO-PG Payment Module (PG Multi-Payment Service) for EC-CUBE

- [CVE-2018-0658](https://insights.sbomify.com/CVE-2018-0658/): Code injection in EC-CUBE Payment Module and GMO-PG Payment Module (PG Multi-Payment Service) for EC-CUBE (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0657 and fix it if it is affected.

What it is: CVE-2018-0657 is a medium-severity cross-site scripting vulnerability in EC-CUBE Payment Module and GMO-PG Payment Module (PG Multi-Payment Service) for EC-CUBE, published on 7 Sep 2018. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-0657 in the wild and no public exploit code.

Affected product: EC-CUBE Payment Module and GMO-PG Payment Module (PG Multi-Payment Service) for 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-2018-0657/ (Markdown: https://insights.sbomify.com/CVE-2018-0657/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0657
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0657
- OSV: https://osv.dev/vulnerability/CVE-2018-0657

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-0657/
Summaries are generated and may contain mistakes; the official description above is the record.