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CVE-2025-66473— XWiki's REST APIs don't enforce any limits, leading to unavailability and OOM in large wikis

Quick assessment

Affected
xwiki xwiki-platform
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

XWiki Platform是XWiki开源的一套用于创建Web协作应用程序的Wiki平台。 XWiki Platform 16.10.10及之前版本、17.0.0-rc-1至17.4.3版本和17.5.0-rc-1至17.6.0版本存在安全漏洞，该漏洞源于缺少请求限制，可能导致服务不可用。

AI Predicted 5.3 Difficulty: Trivial EPSS 0.40% · P33
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I. Basic Information for CVE-2025-66473

Vulnerability Information
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Vulnerability Title
XWiki's REST APIs don't enforce any limits, leading to unavailability and OOM in large wikis
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
XWiki Platform 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
XWiki Platform是XWiki开源的一套用于创建Web协作应用程序的Wiki平台。 XWiki Platform 16.10.10及之前版本、17.0.0-rc-1至17.4.3版本和17.5.0-rc-1至17.6.0版本存在安全漏洞，该漏洞源于缺少请求限制，可能导致服务不可用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
xwiki xwiki-platform < 16.10.11 -

II. Public POCs for CVE-2025-66473

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III. Intelligence Information for CVE-2025-66473

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Patches & Fixes for CVE-2025-66473 (1)

Vendor Advisories for CVE-2025-66473 (1)

Other References for CVE-2025-66473 (1)

Same Patch Batch · xwiki · 2025-12-10 · 3 CVEs total

CVE-2025-66472 XWiki vulnerable to a reflected XSS via xredirect parameter in DeleteApplication
CVE-2025-66474 XWiki vulnerable to remote code execution through insufficient protection against {{/html}

IV. Related Vulnerabilities

Same product: xwiki-platform
Same vendor: xwiki
Same weakness: CWE-770

V. Comments for CVE-2025-66473

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