CVE-2021-26078: Atlassian Data Center

Medium severity, CVSS 6.1. EPSS: 4% chance of exploitation in the next 30 days.

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.

Affected products

• Atlassian Data Center: before 8.5.14 (fixed in 8.5.14); from 8.6.0, before 8.13.6 (fixed in 8.13.6); from 8.14.0, before 8.16.1 (fixed in 8.16.1)
• Atlassian Jira: before 8.5.14 (fixed in 8.5.14)
• Atlassian Jira Server: from 8.6.0, before 8.13.6 (fixed in 8.13.6); from 8.14.0, before 8.16.1 (fixed in 8.16.1)

Published 2021-06-07. Last modified 2026-06-17.