CVE-2026-40105
XWiki has Reflected Cross-Site Scripting (XSS) in its page history compare functionality
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.
INFO
Published Date :
April 15, 2026, 4:17 a.m.
Last Modified :
April 23, 2026, 1:52 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update XWiki Platform to a fixed version.
- Alternatively, manually patch templates/changesdoc.vm.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-40105.
| URL | Resource |
|---|---|
| https://github.com/xwiki/xwiki-platform/commit/3c8a2ec985641367015c2db937574fcd360c788c | Patch |
| https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-w4fj-87j5-f25c | Vendor Advisory |
| https://jira.xwiki.org/browse/XWIKI-23472 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-40105 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-40105
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-40105 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-40105 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 23, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:* versions from (including) 17.0.0 up to (excluding) 17.4.8 *cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.10.1 *cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:* versions from (including) 10.4 up to (excluding) 16.10.16 Added Reference Type GitHub, Inc.: https://github.com/xwiki/xwiki-platform/commit/3c8a2ec985641367015c2db937574fcd360c788c Types: Patch Added Reference Type GitHub, Inc.: https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-w4fj-87j5-f25c Types: Vendor Advisory Added Reference Type GitHub, Inc.: https://jira.xwiki.org/browse/XWIKI-23472 Types: Vendor Advisory -
New CVE Received by [email protected]
Apr. 15, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-80 Added Reference https://github.com/xwiki/xwiki-platform/commit/3c8a2ec985641367015c2db937574fcd360c788c Added Reference https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-w4fj-87j5-f25c Added Reference https://jira.xwiki.org/browse/XWIKI-23472