Is CVE-2026-40105 in the CISA KEV catalog?

No. CVE-2026-40105 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-40105?

CVE-2026-40105 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2026-40105?

CVE-2026-40105 has an EPSS score of 0.55% (42th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-40105?

Upgrade xwiki to 17.10.1 or later.

CVE & CISA-KEV Catalog

CVE-2026-40105

MEDIUM

6.1

CVSS v3

NVD

Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Versions 10.4-rc-1, through 16.10.15, 17.0.0-rc-1, through 17.4.7 and 17.5.0-rc-1 through 17.10.0 contain a reflected cross-site scripting vulnerability (XSS) in the comparison view between revisions of a page allows executing JavaScript code in the user's browser. If the current user is an admin, this can not only affect the current user but also the confidentiality, integrity and availability of the whole XWiki instance. If developers are unable to update immediately, they can apply the patch manually to templates/changesdoc.vm in the deployed WAR.

CWE-80

How to fix

Remediation Available

xwikiNVD

Affected:>= 17.5.0, < 17.10.1Fixed in:17.10.1CVE-2026-40105derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.55%probability of exploitation in 30 days

42ndpercentile

Moderate risk: more likely to be exploited than 42% of all known CVEs.

References

Patch1

github.com

Vendor Advisory2

Embed a live status badge for CVE-2026-40105

Markdown

[![CVE-2026-40105](https://tridentstack.com/cve/badge/CVE-2026-40105.svg)](https://tridentstack.com/cve/CVE-2026-40105)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-40105"><img src="https://tridentstack.com/cve/badge/CVE-2026-40105.svg" alt="CVE-2026-40105"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.