The Transition Technologies "The Scheduler" app 5.1.3 for Jira allows XXE due to a weakly configured/parameterized XML parser. It was fixed in the versions 5.2.1 and 3.3.7
https://www.compass-security.com/fileadmin/Datein/Research/Advisories/CSNC-2018-022_jira_plugin_the_scheduler.txt
https://marketplace.atlassian.com/apps/37456/the-scheduler?hosting=server&tab=versions
Source: Mitre, NVD
Published: 2019-08-07
Updated: 2026-06-17
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity: High
EPSS: 0.0028