CVE-2018-1000801
okular version 18.08 and earlier contains a Directory Traversal vulnerability in function "unpackDocumentArchive(…)" in "core/document.cpp" that can result in Arbitrary file creation on the user workstation. This attack appear to be exploitable via he victim must open a specially crafted Okular archive. This issue appears to have been corrected in version 18.08.1
Source: CVE-2018-1000801