Medium 6.9Published Apr 14, 2026

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

Updated under an hour ago (Oct 26, 2026, 11:00 PM ET)

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It affects xwiki org.xwiki.platform:xwiki-platform-oldcore and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for xwiki org.xwiki.platform:xwiki-platform-oldcore

Exploited in the last 30 days

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: 6.9 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-770
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Apr 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

xwiki org.xwiki.platform:xwiki-platform-oldcore xwiki:org.xwiki.platform_xwiki_platform_oldcore (from the name)	from 1.8-rc-1, < 16.10.16; from 17.0.0-rc-1, < 17.4.8; from 17.5.0-rc-1, < 17.10.1	CNA record
xwiki org.xwiki.platform:xwiki-platform-legacy-oldcore xwiki:org.xwiki.platform_xwiki_platform_legacy_oldcore (from the name)	from 1.8-rc-1, < 16.10.16; from 17.0.0-rc-1, < 17.4.8; from 17.5.0-rc-1, < 17.10.1	CNA record
xwiki xwiki xwiki:xwiki	from 1.8 before 16.10.16; from 17.0.0 before 17.4.8; from 17.5.0 before 17.10.1	NVD

References

References

https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-mrqg-xmgm-rc5g	x-refsource-confirm, vendor-advisory
https://github.com/xwiki/xwiki-platform/commit/47b568c4753a6e682b14be1ca581bdd3b25d45a7	x-refsource-misc, patch
https://jira.xwiki.org/browse/XWIKI-23550	x-refsource-misc, issue-tracking, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.