Vulnerability in Xwiki
CVE-2025-32783
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (22.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Xwiki
- Xwiki Xwiki-Platform — versions >= 5.0, <= 16.7.1
Weakness classification (CWE)
References
- github.com/xwiki/xwiki-platform/security/advisories/GHSA-42fh-pvvh-999x (Vendor Advisory)
- jira.xwiki.org/browse/XWIKI-17154 (Exploit, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-32783?
- CVE-2025-32783 is a medium-severity vulnerability in Xwiki, classified under Exposure of Resource to Wrong Sphere. CVSS score: 4.7/10. Published 2025-04-16.
- How severe is CVE-2025-32783?
- Medium severity. CVSS v3 base score is 4.7 out of 10.