CVE-2021-26080 Cross-site scripting in Jira Data Center

What is CVE-2021-26080?

CVE-2021-26080 is a medium-severity cross-site scripting vulnerability in Atlassian Jira Data Center, 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

EditworkflowScheme.jspa in Jira Server and Jira Data Center before version 8.5.14, and from version 8.6.0 before version 8.13.6, and from 8.14.0 before 8.16.1 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability.

Weakness: CWE-79

Which versions are affected by CVE-2021-26080?

It affects 2 products.

Products include Atlassian Jira Data Center, Atlassian Jira Server.

How do I fix CVE-2021-26080?

No fix has been published for CVE-2021-26080 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-2021-26080 being exploited?

There is no known exploitation of CVE-2021-26080 in the wild and no public exploit code.

Other vulnerabilities in Atlassian Jira Data Center

• CVE-2021-26086 Atlassian Jira Server and Data Center Path Traversal Exploited Medium 5.3
• CVE-2022-0540 Auth bypass in Jira Core Server Critical 9.8
• CVE-2020-36239 Deserialization in Jira Core Data Center Critical 9.8
• CVE-2025-22167 Path traversal in Jira Software Data Center High 8.7
• CVE-2019-20419 Other in Jira Server High 7.8

All Atlassian Jira Data Center vulnerabilities

Sources

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

Also known as GHSA-hccg-5m3q-4vwv.