CVE-2025-66473: xwiki DoS — Fix

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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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-770 CWE-770

Affected Products

Vendor	Product	Versions
xwiki	xwiki	< 16.10.11
xwiki	xwiki	17.0.0 — 17.4.4
xwiki	xwiki	17.5.0 — 17.6.0

References

Advisories & Patches

https://github.com/xwiki/xwiki-platform/commit/e3c47745195fb445b054537be86f5c01ee69558b https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-cc84-q3v3-mhgf https://jira.xwiki.org/browse/XWIKI-23355 https://jira.xwiki.org/browse/XWIKI-23355

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-66473? +

CVE-2025-66473 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-66473? +

CVE-2025-66473 affects products from xwiki, specifically: xwiki. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-66473? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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