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Test your applicationsUpgrade org.xwiki.platform:xwiki-platform-security-requiredrights-default
to version 15.10.8, 16.2.0 or higher.
Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output due to the improper handling of TextArea
properties with default content types. An attacker can execute arbitrary scripts that impact the confidentiality, integrity, and availability of the XWiki installation by inserting malicious scripts into these properties, which are then executed after an edit by a user with higher privileges.