CVE-2020-4021 Cross-site scripting in Jira Server and Data Center
Remote attackers can inject arbitrary HTML or JavaScript via XSS in the XML export view of Atlassian Jira Server and Data Center.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-4021?
CVE-2020-4021 is a medium-severity cross-site scripting vulnerability in Atlassian Jira, published on 1 Jun 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Affected versions are: Before 8.5.5, and from 8.6.0 before 8.8.1 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 XML export view.
Weakness: CWE-79
Which versions are affected by CVE-2020-4021?
It affects 4 products.
Products include Atlassian Jira, Atlassian Jira Data Center, Atlassian Jira Server, Atlassian Jira Software Data Center.
How do I fix CVE-2020-4021?
No fix has been published for CVE-2020-4021 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-2020-4021 being exploited?
There is no known exploitation of CVE-2020-4021 in the wild and no public exploit code.
Other vulnerabilities in Atlassian Jira
Sources
Also known as GHSA-844c-8r3w-mhj6.