# CVE-2018-18660: Cross-site scripting in n/a

> Reflected cross-site scripting in Arcserve Unified Data Protection allows attackers to inject scripts via the domain authentication endpoint.

- **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:** 26 Oct 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-x4v5-9rm3-c7wc

## What is CVE-2018-18660?

CVE-2018-18660 is a medium-severity cross-site scripting vulnerability in n/a, published on 26 Oct 2018. 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

An issue was discovered in Arcserve Unified Data Protection (UDP) through 6.5 Update 4. There is a DDI-VRT-2018-21 Reflected Cross-site Scripting via /authenticationendpoint/domain.jsp issue.

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

## Which versions are affected by CVE-2018-18660?

It affects 1 product.


Products: Arcserve Udp.

## How do I fix CVE-2018-18660?

No fix has been published for CVE-2018-18660 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-18660 being exploited?

There is no known exploitation of CVE-2018-18660 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2015-4068](https://insights.sbomify.com/CVE-2015-4068/): Arcserve Unified Data Protection (UDP) Directory Traversal (critical 9.1, exploited in the wild)
- [CVE-2024-0799](https://insights.sbomify.com/CVE-2024-0799/): Authentication Bypass via wizardLogin in Arcserve Unified Data Protection (critical 9.8)
- [CVE-2023-41998](https://insights.sbomify.com/CVE-2023-41998/): Arcserve UDP Unauthenticated RCE (critical 9.8)
- [CVE-2023-41999](https://insights.sbomify.com/CVE-2023-41999/): Arcserve UDP Management Authentication Bypass (critical 9.8)
- [CVE-2023-42000](https://insights.sbomify.com/CVE-2023-42000/): Arcserve UDP Agent Unauthenticated Path Traversal File Upload (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-18660 and fix it if it is affected.

What it is: CVE-2018-18660 is a medium-severity cross-site scripting vulnerability in n/a, published on 26 Oct 2018. 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-2018-18660 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-2018-18660/ (Markdown: https://insights.sbomify.com/CVE-2018-18660/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-18660
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-18660
- OSV: https://osv.dev/vulnerability/CVE-2018-18660

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-18660/
Summaries are generated and may contain mistakes; the official description above is the record.