The footnote macro executed its content in a potentially different context than the one in which it was defined. In particular in combination with the include macro, this allows privilege escalation from a simple user account in XWiki to programming rights and thus remote code execution, impacting the confidentiality, integrity and availability of the whole XWiki installation.
To reproduce, perform the following steps:
{{footnote}}{{groovy}}println("Hello " + "from groovy!"){{/groovy}}{{/footnote}}
When the text "Hello from groovy!" is displayed at the bottom of the document, the installation is vulnerable. Instead, an error should be displayed.
This vulnerability has been patched in XWiki 14.10.6 and 15.1-rc-1.
There is no workaround apart from upgrading to a fixed version of the footnote macro.
{ "nvd_published_at": "2023-10-25T18:17:28Z", "cwe_ids": [ "CWE-270" ], "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2023-10-25T21:07:42Z" }