# CVE-2021-41310: Cross-site scripting in Jira Data Center

> Anonymous attackers can inject arbitrary HTML or JavaScript via XSS in the Associated Projects feature, potentially compromising user sessions.

- **Severity:** Medium 6.1 (`CVSS:3.1/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:** 1 Nov 2021
- **Updated:** 9 Oct 2024
- **Also known as:** GHSA-w9v5-j4w6-fq3m

## What is CVE-2021-41310?

CVE-2021-41310 is a medium-severity cross-site scripting vulnerability in Atlassian Jira Data Center, published on 1 Nov 2021. 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

Affected versions of Atlassian Jira Server and Data Center allow anonymous remote attackers to inject arbitrary HTML or JavaScript via a Cross-Site Scripting (XSS) vulnerability in the Associated Projects feature (/secure/admin/AssociatedProjectsForCustomField.jspa). The affected versions are before version 8.5.19, from version 8.6.0 before 8.13.11, and from version 8.14.0 before 8.19.1.

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

## Which versions are affected by CVE-2021-41310?

It affects 1 product.


Products: Atlassian Jira Software Data Center.

## How do I fix CVE-2021-41310?

No fix has been published for CVE-2021-41310 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-41310 being exploited?

There is no known exploitation of CVE-2021-41310 in the wild and no public exploit code.

## Other vulnerabilities in Atlassian Jira Data Center

- [CVE-2021-41311](https://insights.sbomify.com/CVE-2021-41311/): Auth bypass in Jira Data Center (high 7.5)
- [CVE-2021-41309](https://insights.sbomify.com/CVE-2021-41309/): Auth bypass in Jira Data Center (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-41310 and fix it if it is affected.

What it is: CVE-2021-41310 is a medium-severity cross-site scripting vulnerability in Atlassian Jira Data Center, published on 1 Nov 2021. 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-2021-41310 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-2021-41310/ (Markdown: https://insights.sbomify.com/CVE-2021-41310/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-41310
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-41310
- OSV: https://osv.dev/vulnerability/CVE-2021-41310

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-41310/
Summaries are generated and may contain mistakes; the official description above is the record.