Description
XWiki Commons are technical libraries common to several other top level XWiki projects. The Document script API returns directly a DocumentAuthors allowing to set any authors to the document, which in consequence can allow subsequent executions of scripts since this author is used for checking rights. The problem has been patched in XWiki 14.10 and 14.4.7 by returning a safe script API.
Remediation
References
https://github.com/xwiki/xwiki-platform/commit/905cdd7c421dbf8c565557cdc773ab1aa9028f83
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-pwfv-3cvg-9m4c
https://jira.xwiki.org/browse/XWIKI-20380
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CVE-2018-20433 Vulnerability in maven package com.mchange:c3p0
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