Skip to content

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

Moderate severity GitHub Reviewed Published Jan 9, 2026 in xwiki-contrib/macro-fullcalendar • Updated Jan 11, 2026

Package

maven org.xwiki.contrib:macro-fullcalendar-pom (Maven)

Affected versions

<= 2.4.5

Patched versions

2.4.6

Description

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:

For more information

If you have any questions or comments about this advisory:

References

@ChiuchiuSorin ChiuchiuSorin published to xwiki-contrib/macro-fullcalendar Jan 9, 2026
Published to the GitHub Advisory Database Jan 9, 2026
Reviewed Jan 9, 2026
Published by the National Vulnerability Database Jan 10, 2026
Last updated Jan 11, 2026

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(7th percentile)

Weaknesses

Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Learn more on MITRE.

CVE ID

CVE-2025-65090

GHSA ID

GHSA-637h-ch24-xp9m

Source code

Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.