# CVE-2019-8450: Cross-site scripting in Jira

> Remote attackers with custom field management permissions can inject arbitrary HTML or JavaScript via XSS in the Optimization plugin.

- **Severity:** Medium 4.8 (`CVSS:3.1/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:** 11 Sep 2019
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-wgx3-89qx-v29j

## What is CVE-2019-8450?

CVE-2019-8450 is a medium-severity cross-site scripting vulnerability in Atlassian Jira Server, published on 11 Sep 2019. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

Various templates of the Optimization plugin in Jira before version 7.13.6, and from version 8.0.0 before version 8.4.0 allow remote attackers who have permission to manage custom fields to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the name of a custom field.

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

## Which versions are affected by CVE-2019-8450?

It affects 1 product.


Products: Atlassian Jira Server.

## How do I fix CVE-2019-8450?

No fix has been published for CVE-2019-8450 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-8450 being exploited?

There is no known exploitation of CVE-2019-8450 in the wild and no public exploit code.

## Other vulnerabilities in Atlassian Jira Server

- [CVE-2019-11581](https://insights.sbomify.com/CVE-2019-11581/): Atlassian Jira Server and Data Center Server-Side Template Injection (critical 9.8, exploited in the wild)
- [CVE-2019-20400](https://insights.sbomify.com/CVE-2019-20400/): Code injection in Jira Server (high 7.8)
- [CVE-2020-14177](https://insights.sbomify.com/CVE-2020-14177/): Denial of service in Jira Server (medium 6.5)
- [CVE-2019-20401](https://insights.sbomify.com/CVE-2019-20401/): Cross-site request forgery in Jira Server (medium 6.5)
- [CVE-2019-14998](https://insights.sbomify.com/CVE-2019-14998/): Cross-site request forgery in Jira (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-8450 and fix it if it is affected.

What it is: CVE-2019-8450 is a medium-severity cross-site scripting vulnerability in Atlassian Jira Server, published on 11 Sep 2019. 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-2019-8450 in the wild and no public exploit code.

Affected product: Atlassian Jira Server. 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-2019-8450/ (Markdown: https://insights.sbomify.com/CVE-2019-8450/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-8450
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-8450
- OSV: https://osv.dev/vulnerability/CVE-2019-8450

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-8450/
Summaries are generated and may contain mistakes; the official description above is the record.