CVE-2026-40104 MEDIUM

CVE-2026-40104: XWiki's REST APIs can list all pages/spaces, leading to unavailability

Vendor Xwiki
Product org.xwiki.platform:xwiki-platform-oldcore
Weakness CWE-770 · Uncontrolled resource consumption
Published April 15, 2026
Last update April 16, 2026
View on NVD All CVEs

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

What the vulnerability does

01Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Versions 1.8-rc-1, 17.0.0-rc-1 and 17.5.0-rc-1 and prior include a resource exhaustion vulnerability in REST API endpoints such as /xwiki/rest/wikis/xwiki/spaces/AnnotationCode/pages/AnnotationConfig/objects/AnnotationCode.AnnotationConfig/0/properties, which list all available pages as part of the metadata for database list properties without applying query limits. On large wikis, this can exhaust available server resources. This issue has been patched in versions 16.10.16, 17.4.8 and 17.10.1.

Key dates

02Disclosure timeline

April 15, 2026 CVE published
April 16, 2026 Record updated