CVE-2019-20900 Cross-site scripting in Jira Server
Remote attackers can inject arbitrary HTML or JavaScript via XSS in the Add Field module, potentially leading to code execution or account takeover.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-20900?
CVE-2019-20900 is a medium-severity cross-site scripting vulnerability in Atlassian Jira Data Center, published on 13 Jul 2020. 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 Add Field module. The affected versions are before version 8.7.0.
Weakness: CWE-79
Which versions are affected by CVE-2019-20900?
It affects 2 products.
Products include Atlassian Jira Data Center, Atlassian Jira Server.
How do I fix CVE-2019-20900?
No fix has been published for CVE-2019-20900 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-2019-20900 being exploited?
There is no known exploitation of CVE-2019-20900 in the wild and no public exploit code.
Other vulnerabilities in Atlassian Jira Data Center
Sources
Also known as GHSA-m64g-rw84-6789.