What’s Vulnerable › Vulnerabilities

CVE-2025-65090: XWiki Full Calendar Macro vulnerable to data leak through Calendar.JSONService

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-10 · updated 2026-06-17
• Weakness: CWE-200

Description

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.

Affected products

• xwiki-contrib macro-fullcalendar: before 2.4.6 — fixed in 2.4.6

How to fix

Upgrade to a fixed version: xwiki-contrib macro-fullcalendar 2.4.6. Check the vendor advisory for mitigations.

References

• https://github.com/xwiki-contrib/macro-fullcalendar/commit/25bc14c181c9a92f493b20ac264388c7ba171884
• https://github.com/xwiki-contrib/macro-fullcalendar/security/advisories/GHSA-637h-ch24-xp9m
• https://jira.xwiki.org/browse/FULLCAL-82

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