CVE-2020-36234 Cross-site scripting in Jira Data Center

What is CVE-2020-36234?

CVE-2020-36234 is a medium-severity cross-site scripting vulnerability in Atlassian Jira, published on 15 Feb 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

Affected versions of Atlassian Jira Server and Data Center allow remote attackers to inject arbitrary HTML or JavaScript via a Cross-Site Scripting (XSS) vulnerability in the Screens Modal view. The affected versions are before version 8.5.11, from version 8.6.0 before 8.13.3, and from version 8.14.0 before 8.15.0.

Weakness: CWE-79

Which versions are affected by CVE-2020-36234?

It affects 4 products.

Products include Atlassian Data Center, Atlassian Jira, Atlassian Jira Data Center, Atlassian Jira Server.

How do I fix CVE-2020-36234?

No fix has been published for CVE-2020-36234 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2020-36234 being exploited?

There is no known exploitation of CVE-2020-36234 in the wild and no public exploit code.

Other vulnerabilities in Atlassian Jira

• CVE-2017-18113 Code injection in Jira Data Center High 8.8
• CVE-2021-41312 Auth bypass in Jira Data Center High 7.5
• CVE-2021-39123 Denial of service in Jira Data Center High 7.5
• CVE-2021-39113 Missing authorization in Jira Data Center High 7.5
• CVE-2021-43947 Code injection in Jira Data Center High 7.2

All Atlassian Jira vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-r7f3-7vg8-6678.