CVE-2026-40104

HIGH

XWiki's REST APIs can list all pages/spaces, leading to unavailability

Title source: cna

Description

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.

References (3)

[X_Refsource_Confirm] https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-mrqg-xmgm-rc5g

[X_Refsource_Misc] https://github.com/xwiki/xwiki-platform/commit/47b568c4753a6e682b14be1ca581bdd3b25d45a7

View Writeup ZIP pw:eip

[X_Refsource_Misc] https://jira.xwiki.org/browse/XWIKI-23550

Scores

CVSS v3 8.2

EPSS 0.0008

EPSS Percentile 22.6%

Attack Vector NETWORK

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

Details

CWE

CWE-770

Status published

Products (7)

xwiki/org.xwiki.platform:xwiki-platform-legacy-oldcore >= 17.0.0-rc-1, < 17.4.8

xwiki/org.xwiki.platform:xwiki-platform-legacy-oldcore >= 17.5.0-rc-1, < 17.10.1

xwiki/org.xwiki.platform:xwiki-platform-legacy-oldcore >= 1.8-rc-1, < 16.10.16

xwiki/org.xwiki.platform:xwiki-platform-oldcore >= 17.0.0-rc-1, < 17.4.8

xwiki/org.xwiki.platform:xwiki-platform-oldcore >= 17.5.0-rc-1, < 17.10.1

xwiki/org.xwiki.platform:xwiki-platform-oldcore >= 1.8-rc-1, < 16.10.16

xwiki/xwiki 1.8 - 16.10.16

Published Apr 15, 2026

Tracked Since Apr 15, 2026