CVE-2025-66473
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-10

Last updated on: 2025-12-11

Assigner: GitHub, Inc.

Description
XWiki is an open-source wiki software platform. Versions 16.10.10 and below, 17.0.0-rc-1 through 17.4.3 and 17.5.0-rc-1 through 17.6.0 contain a REST API which doesn't enforce any limits for the number of items that can be requested in a single request at the moment. Depending on the number of pages in the wiki and the memory configuration, this can lead to slowness and unavailability of the wiki. As an example, the /rest/wikis/xwiki/spaces resource returns all spaces on the wiki by default, which are basically all pages. This issue is fixed in versions 17.4.4 and 16.10.11.
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Meta Information
Published
2025-12-10
Last Modified
2025-12-11
Generated
2026-06-16
AI Q&A
2025-12-11
EPSS Evaluated
2026-06-15
NVD
CVE-2025-66473
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
xwiki xwiki 17.6.0
xwiki xwiki 17.5.0-rc-1
xwiki xwiki 16.10.10
xwiki xwiki 17.4.3
xwiki xwiki 17.0.0-rc-1
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-770 The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
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Executive Summary

This vulnerability exists in certain versions of XWiki where the REST API does not limit the number of items that can be requested in a single call. For example, the /rest/wikis/xwiki/spaces endpoint returns all spaces (essentially all pages) by default without restrictions. This lack of limits can cause performance issues such as slowness or unavailability of the wiki, depending on the number of pages and memory configuration.

Impact Analysis

The vulnerability can lead to significant slowness or even unavailability of the XWiki platform when large requests are made to the REST API without limits. This can disrupt access to the wiki, affecting productivity and availability of information.

Mitigation Strategies

Upgrade XWiki to version 17.4.4 or 16.10.11 or later, as these versions contain the fix for this vulnerability.

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