What is CVE-2023-45137?

CVE-2023-45137 is a critical-severity vulnerability in Xwiki, classified under Cross-site Scripting. CVSS score: 9.0/10. Published 2023-10-25.

How severe is CVE-2023-45137?

Critical severity. CVSS v3 base score is 9.0 out of 10.

XSS in Xwiki

CVE-2023-45137

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. `org.xwiki.platform:xwiki-platform-web` starting in version 3.1-milestone-2 and prior to version 13.4-rc-1, as well as `org.xwiki.platform:xwiki-platform-web-templates` prior to versions 14.10.12 and 15.5-rc-1, are vulnerable to cross-site scripting. When trying to create a document that already exists, XWiki displays an error message in the form for creating it. Due to missing escaping, this error message is vulnerable to raw HTML injection and thus XSS. The injected code is the document reference of the existing document so this requires that the attacker first creates a non-empty document whose name contains the attack code. This has been patched in `org.xwiki.platform:xwiki-platform-web` version 13.4-rc-1 and `org.xwiki.platform:xwiki-platform-web-templates` versions 14.10.12 and 15.5-rc-1 by adding the appropriate escaping. The vulnerable template file `createinline.vm` is part of XWiki's WAR and can be patched by manually applying the changes from the fix.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-10-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (48.0th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Xwiki — versions 3.1
Xwiki Xwiki-Platform — versions >= 3.1-milestone-2, < 13.4-rc-1, >= 14.0-rc-1, < 14.10.12, >= 15.0-rc-1, < 15.5-rc-1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/xwiki/xwiki-platform/security/advisories/GHSA-93gh-jgjj-r929 (Exploit, Patch, Vendor Advisory)
github.com/xwiki/xwiki-platform/commit/ed8ec747967f8a16434806e727a57214a8843581 (Patch)
jira.xwiki.org/browse/XWIKI-20961 (Exploit, Patch, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2023-45137?: CVE-2023-45137 is a critical-severity vulnerability in Xwiki, classified under Cross-site Scripting. CVSS score: 9.0/10. Published 2023-10-25.
How severe is CVE-2023-45137?: Critical severity. CVSS v3 base score is 9.0 out of 10.