Description
XWiki Commons are technical libraries common to several other top level XWiki projects. There was no check in the author of a JavaScript xobject or StyleSheet xobject added in a XWiki document, so until now it was possible for a user having only Edit Right to create such object and to craft a script allowing to perform some operations when executing by a user with appropriate rights. This has been patched in XWiki 14.9-rc-1 by only executing the script if the author of it has Script rights.
Remediation
References
Related Vulnerabilities
Ruby Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2020-10933)
Serendipity Server-Side Request Forgery (SSRF) Vulnerability (CVE-2016-9752)
Oracle JRE CVE-2019-2949 Vulnerability (CVE-2019-2949)
WordPress Plugin WordPress Comment Rating Cross-Site Scripting (1.5.3)
Internet Information Services Other Vulnerability (CVE-1999-0448)