CVE-2019-20105: Atlassian Application Links

Medium severity, CVSS 4.9. EPSS: 1.5% chance of exploitation in the next 30 days.

The EditApplinkServlet resource in the Atlassian Application Links plugin before version 5.4.20, from version 6.0.0 before version 6.0.12, from version 6.1.0 before version 6.1.2, from version 7.0.0 before version 7.0.1, and from version 7.1.0 before version 7.1.3 allows remote attackers who have obtained access to administrator's session to access the EditApplinkServlet resource without needing to re-authenticate to pass "WebSudo" in products that support "WebSudo" through an improper access control vulnerability.

Affected products

• Atlassian Application Links: up to and including 5.4.20; from 6.0.0, up to and including 6.0.12; from 6.1.0, before 6.1.2 (fixed in 6.1.2); from 7.1.0, before 7.1.3 (fixed in 7.1.3); version 7.0.0 only

Published 2020-03-17. Last modified 2026-06-17.