Is CVE-2026-40104 actively exploited?

No active exploitation of CVE-2026-40104 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-40104 be exploited remotely?

Yes. CVE-2026-40104 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-40104?

CVE-2026-40104 has a CVSS score of 8.2 (HIGH).

HOME VULNERABILITIESCVE-2026-40104

HIGH

CVE-2026-40104

CWE-770Published: April 15, 2026· Updated: Apr 17, 2026

8.2

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.1th

Official 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.

NVD Source

Technical Analysis

CVE-2026-40104 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 8.2.