CVE-2023-45136: XWiki Platform web templates vulnerable to reflected XSS in the create document form if name validation is enabled

Severity: critical (CVSS 9.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-10-25 · updated 2026-06-17
Weakness: CWE-79

Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. When document names are validated according to a name strategy (disabled by default), XWiki starting in version 12.0-rc-1 and prior to versions 12.10.12 and 15.5-rc-1 is vulnerable to a reflected cross-site scripting attack in the page creation form. This allows an attacker to execute arbitrary actions with the rights of the user opening the malicious link. Depending on the rights of the user, this may allow remote code execution and full read and write access to the whole XWiki installation. This has been patched in XWiki 14.10.12 and 15.5-rc-1 by adding 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.

Affected products

xwiki-platform: from 12.0 before 14.10.12; from 15.0 before 15.5; 15.5-rc1 — fixed in 14.10.12, 15.5

How to fix

Upgrade to a fixed version: xwiki-platform 14.10.12, 15.5. Check the vendor advisory for mitigations.

References

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