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Advisory record · GHSA-637h-ch24-xp9m

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

CVSS 5.3 MediumEPSS 0.0028 · 20th percentile

Published by the GitHub Advisory Database at 9 Jan 2026, 18:35 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.xwiki.contrib:macro-fullcalendar-pomMaven<2.4.62.4.6
Identifiers
GHSA-637h-ch24-xp9m · CVE-2025-65090
Weakness (CWE)
CWE-200
Tags
Published
9 Jan 2026
Updated
3 Feb 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

XWiki Full Calendar Macro (org.xwiki.contrib:macro-fullcalendar-pom) versions before 2.4.6 are vulnerable to data leakage through the Calendar.JSONService page. Anyone with view rights to that page, including guest users, can access database information, though passwords are excluded. Upgrade to version 2.4.6. As a workaround, the Calendar.JSONService page can be removed, but this breaks some functionality.

Written 7 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.3 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0028, the 20th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:09 UTC First seen by agentprime
  2. 31 Oct 2026, 15:09 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.