CVE-2018-13400: Atlassian Jira

Medium severity, CVSS 4.7. EPSS: 1.4% chance of exploitation in the next 30 days.

Several administrative resources in Atlassian Jira before version 7.6.9, from version 7.7.0 before version 7.7.5, from version 7.8.0 before version 7.8.5, from version 7.9.0 before version 7.9.3, from version 7.10.0 before version 7.10.3, from version 7.11.0 before version 7.11.3, from version 7.12.0 before version 7.12.3, and before version 7.13.1 allow remote attackers who have obtained access to administrator's session to access certain administrative resources without needing to re-authenticate to pass "WebSudo" through an improper access control vulnerability.

Affected products

• Atlassian Jira: before 7.6.9 (fixed in 7.6.9)
• Atlassian Jira Server: from 7.7.0, before 7.7.5 (fixed in 7.7.5); from 7.8.0, before 7.8.5 (fixed in 7.8.5); from 7.9.0, before 7.9.3 (fixed in 7.9.3); from 7.10.0, before 7.10.3 (fixed in 7.10.3); from 7.11.0, before 7.11.3 (fixed in 7.11.3); from 7.12.0, before 7.12.3 (fixed in 7.12.3); …

Published 2018-10-23. Last modified 2026-06-17.