# CVE-2018-13391: Information disclosure in Jira

> Remote attackers can view hidden email addresses of issue reporters and assignees in Jira Server, bypassing configured visibility settings.

- **Severity:** Medium 5.3 (`CVSS:3.0/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:** 28 Aug 2018
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-mx8x-xvrx-qv4p

## What is CVE-2018-13391?

CVE-2018-13391 is a medium-severity vulnerability in Atlassian Jira, published on 28 Aug 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The ProfileLinkUserFormat component of Jira Server before version 7.6.8, from version 7.7.0 before version 7.7.5, from version 7.8.0 before version 7.8.5, from version 7.9.0 before version 7.9.3, from version 7.10.0 before version 7.10.3 and from version 7.11.0 before version 7.11.2 allows remote attackers who can access & view an issue to obtain the email address of the reporter and assignee user of an issue despite the configured email visibility setting being set to hidden.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2018-13391?

It affects 2 products.


Products: Atlassian Jira, Atlassian Jira Server.

## How do I fix CVE-2018-13391?

No fix has been published for CVE-2018-13391 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-13391 being exploited?

There is no known exploitation of CVE-2018-13391 in the wild and no public exploit code.

## Other vulnerabilities in Atlassian Jira

- [CVE-2020-14172](https://insights.sbomify.com/CVE-2020-14172/): Deserialization in Jira Server (critical 9.8)
- [CVE-2019-20409](https://insights.sbomify.com/CVE-2019-20409/): Code injection in Jira Server (critical 9.8)
- [CVE-2017-5983](https://insights.sbomify.com/CVE-2017-5983/): Deserialization in n/a (critical 9.8)
- [CVE-2010-1165](https://insights.sbomify.com/CVE-2010-1165/): Code injection in n/a (critical 9.0)
- [CVE-2016-4319](https://insights.sbomify.com/CVE-2016-4319/): Cross-site request forgery in Atlassian JIRA Server before 7.1.9 (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-13391 and fix it if it is affected.

What it is: CVE-2018-13391 is a medium-severity vulnerability in Atlassian Jira, published on 28 Aug 2018. 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-2018-13391 in the wild and no public exploit code.

Affected product: Atlassian Jira. 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-2018-13391/ (Markdown: https://insights.sbomify.com/CVE-2018-13391/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-13391
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-13391
- OSV: https://osv.dev/vulnerability/CVE-2018-13391

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-13391/
Summaries are generated and may contain mistakes; the official description above is the record.