CVE-2019-12739

lib/Controller/ExtractionController.php in the Extract add-on before 1.2.0 for Nextcloud allows Remote Code Execution via shell metacharacters in a RAR filename via ajax/extractRar.php (nameOfFile and directory parameters).

Date published : 2019-06-05

https://hackerone.com/reports/546753

https://www.secsignal.org/news/a-tale-of-rce-nextcloud-extract-app/