Resource exhaustion in Xwiki
CVE-2025-66473
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (31.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Xwiki
- Xwiki Xwiki-Platform — versions < 16.10.11, >= 17.0.0-rc-1, < 17.4.4, >= 17.5.0-rc-1, < 17.7.0-rc-1
Weakness classification (CWE)
References
- github.com/xwiki/xwiki-platform/security/advisories/GHSA-cc84-q3v3-mhgf (Patch, Vendor Advisory)
- github.com/xwiki/xwiki-platform/commit/e3c47745195fb445b054537be86f5c01ee69558b (Patch)
- jira.xwiki.org/browse/XWIKI-23355 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-66473?
- CVE-2025-66473 is a high-severity vulnerability in Xwiki, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2025-12-10.
- How severe is CVE-2025-66473?
- High severity. CVSS v3 base score is 7.5 out of 10.