Anyone who has view rights on the Calendar.JSONService page, including guest users can exploit this vulnerability by accessing database info or starting a DoS attack.
Remove the Calendar.JSONService page. This will however break some functionalities.
Jira issue: * FULLCAL-80: SQL injection through Calendar.JSONService * FULLCAL-81: SQL injection through Calendar.JSONService still exists
If there are any questions or comments about this advisory: * Open an issue in Jira XWiki.org * Email Security Mailing List
{
"severity": "CRITICAL",
"github_reviewed_at": "2026-01-09T18:41:47Z",
"cwe_ids": [
"CWE-89"
],
"nvd_published_at": null,
"github_reviewed": true
}