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bdu:2026-00447

EUVD-2026-265423

fkie_cve-2025-65090

XWiki Full Calendar Macro displays objects from the wiki on the calendar. Prior to version 2.4.6, users with the rights to view the Calendar.JSONService page (including guest users) can exploit the data leak vulnerability by accessing database info, with the exception of passwords. This issue has been patched in version 2.4.6.

GHSA-637h-ch24-xp9m — XWiki Full Calendar Macro vulnerable to data leak through Calendar.JSONService

Affected: Maven: org.xwiki.contrib:macro-fullcalendar-pom

### Impact Anyone who has view rights on the `Calendar.JSONService` page, including guest users can exploit this vulnerability by accessing database info, with the exception of passwords.

### Workarounds Remove the `Calendar.JSONService` page. This will however break some functionalities.

### References

Jira issue: * [FULLCAL-82: Calendar.JSONService exposes emails of all users](https://jira.xwiki.org/browse/FULLCAL-82)

### For more information

If you have any questions or comments about this advisory: * Open an issue in [Jira XWiki.org](https://jira.xwiki.org/) * Email us at [Security Mailing List](mailto:security@xwiki.org)

WID-SEC-W-2026-0060 — xwiki (Full Calendar Macro): Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in xwiki ausnutzen, um Informationen offenzulegen, eine SQL-Injection durchzuführen oder einen Denial-of-Service-Zustand zu verursachen.