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CVE-2026-40104

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

Published: Apr 15, 2026Updated: Apr 23, 2026 Sources: CVE List NVDCWE-770
NVD MITRE
8.2CVSSHIGH
EPSS Score
0.4%
Top 67.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-770

Affected Products

org.xwiki.platform:xwiki-platform-oldcorexwiki
On-prem
Web & CMS Plugins / cms-core
org.xwiki.platform:xwiki-platform-legacy-oldcorexwiki
On-prem
Web & CMS Plugins / cms-core
xwikixwiki
On-premWeb App
Web & CMS Plugins / cms-core
xwikioss-projectFRWeb & CMS Pluginsaka xwiki-platform, xwiki-commons

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-mrqg-xmgm-rc5g
github.com
https://github.com/xwiki/xwiki-platform/commit/47b568c4753a6e682b14be1ca581bdd3b25d45a7
github.com
https://jira.xwiki.org/browse/XWIKI-23550
jira.xwiki.org

Timeline

Published
Apr 15, 2026
Last Updated
Apr 23, 2026

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