CVE-2021-39111 Cross-site scripting in Jira Data Center
Remote attackers can inject arbitrary HTML or JavaScript via XSS in the Editor plugin when pasting content, potentially leading to code execution or account takeover.
- 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
- None listed
What is CVE-2021-39111?
CVE-2021-39111 is a medium-severity cross-site scripting vulnerability in Atlassian Jira, published on 30 Aug 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
The Editor plugin in Atlassian Jira Server and Data Center before version 8.5.18, from 8.6.0 before 8.13.10, and from version 8.14.0 before 8.18.2 allows remote attackers to inject arbitrary HTML or JavaScript via a Cross-Site Scripting (XSS) vulnerability in the handling of supplied content such as from a PDF when pasted into a field such as the description field.
Weakness: CWE-79
Which versions are affected by CVE-2021-39111?
It affects 4 products.
Products include Atlassian Data Center, Atlassian Jira, Atlassian Jira Data Center, Atlassian Jira Server.
How do I fix CVE-2021-39111?
No fix has been published for CVE-2021-39111 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-2021-39111 being exploited?
There is no known exploitation of CVE-2021-39111 in the wild and no public exploit code.
Other vulnerabilities in Atlassian Jira
Sources
Also known as GHSA-56cm-gqqx-cjww.