CVE-2021-26078 Cross-site scripting in Jira Data Center
Remote attackers can inject arbitrary HTML or JavaScript via XSS in the number range searcher, potentially leading to session hijacking or malicious actions.
- 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-2021-26078?
CVE-2021-26078 is a medium-severity cross-site scripting vulnerability in Atlassian Jira, published on 7 Jun 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 number range searcher component in Jira Server and Jira Data Center before version 8.5.14, from version 8.6.0 before version 8.13.6, and from version 8.14.0 before version 8.16.1 allows remote attackers inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability.
Weakness: CWE-79
Which versions are affected by CVE-2021-26078?
It affects 3 products.
Products include Atlassian Data Center, Atlassian Jira, Atlassian Jira Server.
How do I fix CVE-2021-26078?
No fix has been published for CVE-2021-26078 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-2021-26078 being exploited?
There is no known exploitation of CVE-2021-26078 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Atlassian Jira
Sources
Also known as GHSA-5fqv-3jfx-5p64.