An issue was discovered in Xpdf 4.04. There is a crash in XRef::fetch(int, int, Object*, int) in xpdf/XRef.cc, a different vulnerability than CVE-2018-16369 and CVE-2019-16088.
https://forum.xpdfreader.com/viewtopic.php?f=3&t=42308&p=43844&hilit=XRef%3A%3Afetch#p43844
https://forum.xpdfreader.com/viewtopic.php?f=1&t=42340&p=43928&hilit=gfseek#p43928