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High severity · published Dec 10, 2025
CVE-2025-66473
XWiki's REST APIs don't enforce any limits, leading to unavailability and OOM in large wikis
7.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XW
xwiki-platform · xwiki
< 16.10.11; >= 17.0.0-rc-1, < 17.4.4; >= 17.5.0-rc-1, < 17.7.0-rc-1 · source: vendor
XW
Xwiki · Xwiki
before 16.10.11; 17.0.0 before 17.4.4; 17.5.0 through 17.6.0 · source: NVD
Affected product
XW
xwiki-platform
xwiki
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-66473
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-66473
Patch
https://github.com/xwiki/xwiki-platform/commit/e3c47745195fb445b054537be86f5c01ee69558b
Patch
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-cc84-q3v3-mhgf
Patch
https://jira.xwiki.org/browse/XWIKI-23355
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