Critical (10.0) in xwiki full calendar macro. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in org.xwiki.contrib:macro-fullcalendar-pom 2.4.5.
XWiki Full Calendar Macro displays objects from the wiki on the calendar. Prior to version 2.4.5, users with the right to view the Calendar.JSONService page (including guest users) can exploit a SQL injection vulnerability by accessing database info or starting a DoS attack. This issue has been patched in version 2.4.5.
Severity
CVSS 3.1
10.0 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS
0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-31)