# CVE-2019-20403: Information disclosure in Jira Server

> Remote attackers can determine if a Jira project key exists via an API information disclosure vulnerability in Jira Server.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Feb 2020
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-gw9f-7gjm-4824

## What is CVE-2019-20403?

CVE-2019-20403 is a medium-severity vulnerability in Atlassian Jira Data Center, published on 6 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The API in Atlassian Jira Server and Data Center before version 8.6.0 allows remote attackers to determine if a Jira project key exists or not via an information disclosure vulnerability.

## Which versions are affected by CVE-2019-20403?

It affects 2 products.


Products: Atlassian Jira Data Center, Atlassian Jira Server.

## How do I fix CVE-2019-20403?

No fix has been published for CVE-2019-20403 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-20403 being exploited?

There is no known exploitation of CVE-2019-20403 in the wild and no public exploit code.

## Other vulnerabilities in Atlassian Jira Data Center

- [CVE-2021-26086](https://insights.sbomify.com/CVE-2021-26086/): Atlassian Jira Server and Data Center Path Traversal (medium 5.3, exploited in the wild)
- [CVE-2022-0540](https://insights.sbomify.com/CVE-2022-0540/): Auth bypass in Jira Core Server (critical 9.8)
- [CVE-2020-36239](https://insights.sbomify.com/CVE-2020-36239/): Deserialization in Jira Core Data Center (critical 9.8)
- [CVE-2025-22167](https://insights.sbomify.com/CVE-2025-22167/): Path traversal in Jira Software Data Center (high 8.7)
- [CVE-2019-20419](https://insights.sbomify.com/CVE-2019-20419/): Other in Jira Server (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-20403 and fix it if it is affected.

What it is: CVE-2019-20403 is a medium-severity vulnerability in Atlassian Jira Data Center, published on 6 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-20403 in the wild and no public exploit code.

Affected product: Atlassian Jira Data Center. 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-2019-20403/ (Markdown: https://insights.sbomify.com/CVE-2019-20403/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-20403
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-20403
- OSV: https://osv.dev/vulnerability/CVE-2019-20403

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-20403/
Summaries are generated and may contain mistakes; the official description above is the record.