CVE-2017-18091: Atlassian Crucible

Medium severity, CVSS 4.8. EPSS: 0.8% chance of exploitation in the next 30 days.

The admin backupprogress action in Atlassian Fisheye and Crucible before version 4.4.3 (the fixed version for 4.4.x) and before 4.5.0 allows remote attackers with administrative privileges to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the filename of a backup.

Affected products

• Atlassian Crucible: from 4.4.0, before 4.4.3 (fixed in 4.4.3)
• Atlassian Fisheye: from 4.4.0, before 4.4.3 (fixed in 4.4.3)

Published 2018-02-16. Last modified 2026-06-17.