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

> Attackers can access sensitive database information via the Calendar.JSONService page, exposing data to unauthorized users including guests.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 10 Jan 2026
- **Updated:** 12 Jan 2026
- **Also known as:** GHSA-637h-ch24-xp9m

## What is CVE-2025-65090?

CVE-2025-65090 is a medium-severity vulnerability in xwiki-contrib macro-fullcalendar, published on 10 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2025-65090?

2 open source packages ship an affected version, including org.xwiki.contrib:macro-fullcalendar-pom. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `org.xwiki.contrib:macro-fullcalendar-pom` | Maven | All versions | 2.4.6 |
| `org.xwiki.contrib:macro-fullcalendar-pom` | Maven | All versions | 2.4.6 |

Products: Xwiki Full Calendar Macro.

## How do I fix CVE-2025-65090?

Upgrade org.xwiki.contrib:macro-fullcalendar-pom to 2.4.6 or later.

## Is CVE-2025-65090 being exploited?

There is no known exploitation of CVE-2025-65090 in the wild and no public exploit code.

## Other vulnerabilities in xwiki-contrib macro-fullcalendar

- [CVE-2025-65091](https://insights.sbomify.com/CVE-2025-65091/): XWiki Full Calendar Macro vulnerable to SQL injection through Calendar.JSONService (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-65090 and fix it if it is affected.

What it is: CVE-2025-65090 is a medium-severity vulnerability in xwiki-contrib macro-fullcalendar, published on 10 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-65090 in the wild and no public exploit code.

Affected packages and fixed versions:
- org.xwiki.contrib:macro-fullcalendar-pom (Maven): affected all versions; fixed in 2.4.6
- org.xwiki.contrib:macro-fullcalendar-pom (Maven): affected all versions; fixed in 2.4.6

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-65090/ (Markdown: https://insights.sbomify.com/CVE-2025-65090/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-65090
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-65090
- OSV: https://osv.dev/vulnerability/CVE-2025-65090

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-65090/
Summaries are generated and may contain mistakes; the official description above is the record.