CVE-2025-65090

XWiki Full Calendar Macro vulnerable to data leak through Calendar.JSONService

5.3 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

0.28%Up 0.3 points since Jan 10, 2026

What each source reports

CVE List Score used 5.3

XWiki Full Calendar Macro vulnerable to data leak through Calendar.JSONService

Record: CVE-2025-65090
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

EUVDEUVD-2026-1700 5.3

Record: EUVD-2026-1700
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-637h-ch24-xp9m 5.3

XWiki Full Calendar Macro vulnerable to data leak through Calendar.JSONService

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

For more information

If you have any questions or comments about this advisory:

Open an issue in Jira XWiki.org
Email us at Security Mailing List

Record: GHSA-637h-ch24-xp9m
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

NVD 5.3

Record: CVE-2025-65090
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

OSV 5.3

XWiki Full Calendar Macro vulnerable to data leak through Calendar.JSONService

Record: CVE-2025-65090
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

OSVGHSA-637h-ch24-xp9m 5.3

XWiki Full Calendar Macro vulnerable to data leak through Calendar.JSONService

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

For more information

If you have any questions or comments about this advisory:

Open an issue in Jira XWiki.org
Email us at Security Mailing List

Record: GHSA-637h-ch24-xp9m
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`org.xwiki.contrib:macro-fullcalendar-pom` Maven	through 2.4.5	2.4.6
`org.xwiki.contrib:macro-fullcalendar-pom` Maven	before 2.4.6	2.4.6

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-65090 is a medium vulnerability (CVSS 5.3) in Xwiki Full Calendar Macro, published January 9, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.28%, the 20th percentile. Fixed in org.xwiki.contrib:macro-fullcalendar-pom 2.4.6.