The latest version of LibreOffice ( 6.2.6 /6.3.0) addresses three vulnerabilities that could be exploited by attackers to bypass patches for two previously addressed issues. The flaw resides in LibreLogo, a programmable turtle vector graphics script that ships by default with LibreOffice. LibreOffice attempted to fix one of the flaws, tracked as CVE-2019-9848, last month with the release of the version 6.5 that also addressed another issue (CVE- 2019-9849)”]
Source: https://securityaffairs.co/wordpress/89962/hacking/libreoffice-flaws.html