# CVE-2018-20306: Cross-site scripting in n/a

> Remote authenticated attackers can inject scripts into the Pulse Secure Virtual Traffic Manager admin interface to steal sensitive data and credentials.

- **Severity:** Medium 5.4 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 20 Dec 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-h98j-8jcj-m3pq

## What is CVE-2018-20306?

CVE-2018-20306 is a medium-severity cross-site scripting vulnerability in n/a, published on 20 Dec 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A stored cross-site scripting (XSS) vulnerability in the web administration user interface of Pulse Secure Virtual Traffic Manager may allow a remote authenticated attacker to inject web script or HTML via a crafted website and steal sensitive data and credentials. Affected releases are Pulse Secure Virtual Traffic Manager 9.9 versions prior to 9.9r2 and 10.4r1.

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

## Which versions are affected by CVE-2018-20306?

It affects 1 product.


Products: Pulsesecure Virtual Traffic Manager.

## How do I fix CVE-2018-20306?

No fix has been published for CVE-2018-20306 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-20306 being exploited?

There is no known exploitation of CVE-2018-20306 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-31922](https://insights.sbomify.com/CVE-2021-31922/): Other in n/a (high 7.5)
- [CVE-2018-20307](https://insights.sbomify.com/CVE-2018-20307/): Information disclosure in n/a (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-20306 and fix it if it is affected.

What it is: CVE-2018-20306 is a medium-severity cross-site scripting vulnerability in n/a, published on 20 Dec 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-20306 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-2018-20306/ (Markdown: https://insights.sbomify.com/CVE-2018-20306/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-20306
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-20306
- OSV: https://osv.dev/vulnerability/CVE-2018-20306

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-20306/
Summaries are generated and may contain mistakes; the official description above is the record.