Vulnerability · Published Dec 10, 2025 · Assigned by GitHub_M
CVE-2025-66473XWiki's REST APIs don't enforce any limits, leading to unavailability and OOM in large wikis
High 8.7
In plain English
A high-severity resource allocation without limits in xwiki-platform from xwiki. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.xwiki.platform:xwiki-platform-rest-server | 16.10.11 | GHSA-cc84-q3v3-mhgf |
| Maven | org.xwiki.platform:xwiki-platform-rest-server | 17.4.4 | GHSA-cc84-q3v3-mhgf |
| Maven | org.xwiki.platform:xwiki-platform-rest-server | 17.7.0-rc-1 | GHSA-cc84-q3v3-mhgf |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| xwiki | xwiki-platform | < 16.10.11>= 17.0.0-rc-1, < 17.4.4>= 17.5.0-rc-1, < 17.7.0-rc-1 |
Weakness: CWE-770 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
References
- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-cc84-q3v3-mhgf x_refsource_CONFIRM
- https://github.com/xwiki/xwiki-platform/commit/e3c47745195fb445b054537be86f5c01ee69558b x_refsource_MISC
- https://jira.xwiki.org/browse/XWIKI-23355 x_refsource_MISC