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TI-2025-23820 Aliases CVE-2025-32783GHSA-42fh-pvvh-999x

XWiki allows unregistered users to see "public" messages from a closed wiki via notifications from a different wiki

Priority MEDIUM 55CWE-668Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-668 and the CVSS impact.

Summary

XWiki Platform is a generic wiki platform. A vulnerability in versions from 5.0 to 16.7.1 affects users with Message Stream enabled and a wiki configured as closed from selecting "Prevent unregistered users to view pages" in the Administrations Rights. The vulnerability is that any message sent in a subwiki to "everyone" is actually sent to the farm: any visitor of the main wiki will be able to see that message through the Dashboard, even if the subwiki is configured to be private. This issue will not be patched as Message Stream has been deprecated in XWiki 16.8.0RC1 and is not maintained anymore. A workaround for this issue involves keeping Message Stream disabled by default. It's advised to keep it disabled from Administration > Social > Message Stream.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00324 25th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
XWikixwiki-platform5.0 – 16.7.1—No fix listedCNA
—org.xwiki.platform:xwiki-platform-messagestream (Maven)5.0 – 16.7.1—No fix listedGHSA-42fh-pvvh-999x
  • xwiki-platform VendorXWiki Affected 5.0 – 16.7.1 Fixed in — No fix listed CNA
  • org.xwiki.platform:xwiki-platform-messagestream (Maven) Vendor— Affected 5.0 – 16.7.1 Fixed in — No fix listed GHSA-42fh-pvvh-999x

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:*5.0 – 16.7.1VulnerableXWiki
  • cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:* Versions 5.0 – 16.7.1 Vulnerable ·XWiki

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-32783
  2. 2026-10-03 Alias added: GHSA-42fh-pvvh-999x

References

Exploit 1

Advisory 2

Other 1

  • TI-2025-18595 Remote code execution as guest via SolrSearchMacros request in xwiki KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-25214 Remote code execution through the section parameter in Administration as guest in XWiki Platform CVSS 3.1CRITICAL 10.0
  • TI-2025-23500 XWiki Platform vulnerable to SQL injection through getdeleteddocuments.vm template sort parameter CVSS 4.0CRITICAL 9.3
  • TI-2025-23979 org.xwiki.platform:xwiki-platform-rest-server allows SQL injection in query endpoint of REST API CVSS 4.0CRITICAL 9.3
  • TI-2024-20829 XWiki Platform: Remote code execution from account via SearchSuggestSourceSheet CVSS 3.1CRITICAL 10.0
  • TI-2024-14375 XWiki Remote Code Execution vulnerability via user registration CVSS 3.1CRITICAL 10.0
See all 247 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences