CVE-2026-40104: org.xwiki.platform:xwiki-platform-oldcore · Unthrottled Resource Allocation
Affects org.xwiki.platform:xwiki-platform-oldcoreSource CVE Database V5
Not known to be exploited · CVSS 6.9 Medium · fixed in 17.10.1 : update org.xwiki.platform:xwiki-platform-oldcore when convenient.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 34% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 17.10.1, 17.4.8, 16.10.16
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 15 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade org.xwiki.platform:xwiki-platform-oldcore and org.xwiki.platform:xwiki-platform-legacy-oldcore to 17.10.1, 17.4.8 or 16.10.16.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| xwikiorg.xwiki.platform:xwiki-platform-oldcore | Affected
| Fixed in
|
| xwikiorg.xwiki.platform:xwiki-platform-oldcore | Affected
| Fixed in
|
| xwikiorg.xwiki.platform:xwiki-platform-oldcore | Affected
| Fixed in
|
| xwikiorg.xwiki.platform:xwiki-platform-legacy-oldcore | Affected
| Fixed in
|
| xwikiorg.xwiki.platform:xwiki-platform-legacy-oldcore | Affected
| Fixed in
|
| xwikiorg.xwiki.platform:xwiki-platform-legacy-oldcore | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
This vulnerability has been patched in XWiki Platform versions 16.10.16, 17.4.8, and 17.10.1. Users should upgrade to one of these versions or later to remediate the issue. Since this is not a cloud service, remediation requires applying the official patches. Patch status is confirmed by the vendor advisory information. No additional mitigation steps are indicated.
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.