Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learningUpgrade org.xwiki.platform:xwiki-platform-office-importer to version 14.10.8, 15.3-rc-1 or higher.
Affected versions of this package are vulnerable to Relative Path Traversal through the office converter feature. An attacker can write the attachment's content to an attacker-controlled location on the server, as long as the Java process has write access to that location. This could be used to replace the jar-file of an extension, allowing the execution of arbitrary Java code, impacting the confidentiality, integrity, and availability of the installation. This is only exploitable if the attachment is uploaded through the REST API which doesn't remove / or \ from the filename.
Mitigation: This vulnerability can be mitigated by disabling the office converter.