In Artifex MuPDF 1.12.0, there is a heap-based buffer overflow vulnerability in the dopdfsave_document function in the pdf/pdf-write.c file. Remote attackers could leverage the vulnerability to cause a denial of service via a crafted pdf file.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-6187.json"