# CVE-2018-5306: Cross-site scripting in n/a

> Remote attackers can inject arbitrary web script or HTML via multiple parameters in Sonatype Nexus Repository Manager, potentially leading to session hijacking or malicious actions.

- **Severity:** Medium 6.1 (`CVSS:3.0/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:** 9 Feb 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-2pwx-xq5x-gj68

## What is CVE-2018-5306?

CVE-2018-5306 is a medium-severity cross-site scripting vulnerability in Sonatype Nexus Repository Manager, published on 9 Feb 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

Multiple cross-site scripting (XSS) vulnerabilities in Sonatype Nexus Repository Manager (aka NXRM) 3.x before 3.8 allow remote attackers to inject arbitrary web script or HTML via (1) the repoId or (2) format parameter to service/siesta/healthcheck/healthCheckFileDetail/.../index.html; (3) the filename in the "File Upload" functionality of the Staging Upload; (4) the username when creating a new user; or (5) the IQ Server URL field in the IQ Server Connection functionality.

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

## Which versions are affected by CVE-2018-5306?

It affects 1 product.


Products: Sonatype Nexus Repository Manager.

## How do I fix CVE-2018-5306?

No fix has been published for CVE-2018-5306 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-5306 being exploited?

There is no known exploitation of CVE-2018-5306 in the wild and no public exploit code.

## Other vulnerabilities in Sonatype Nexus Repository Manager

- [CVE-2019-7238](https://insights.sbomify.com/CVE-2019-7238/): Sonatype Nexus Repository Manager Incorrect Access Control (critical 9.8, exploited in the wild)
- [CVE-2019-9629](https://insights.sbomify.com/CVE-2019-9629/): Hardcoded credentials in n/a (critical 9.8)
- [CVE-2017-17717](https://insights.sbomify.com/CVE-2017-17717/): Hardcoded credentials in n/a (critical 9.8)
- [CVE-2026-3199](https://insights.sbomify.com/CVE-2026-3199/): Nexus Repository 3 - Authenticated Remote Code Execution via Task Property Injection (critical 9.4)
- [CVE-2026-5189](https://insights.sbomify.com/CVE-2026-5189/): Nexus Repository 3 - Hardcoded Credential in Internal Database Component (critical 9.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-5306 and fix it if it is affected.

What it is: CVE-2018-5306 is a medium-severity cross-site scripting vulnerability in Sonatype Nexus Repository Manager, published on 9 Feb 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-2018-5306 in the wild and no public exploit code.

Affected product: Sonatype Nexus Repository Manager. 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-2018-5306/ (Markdown: https://insights.sbomify.com/CVE-2018-5306/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-5306
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-5306
- OSV: https://osv.dev/vulnerability/CVE-2018-5306

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-5306/
Summaries are generated and may contain mistakes; the official description above is the record.