An exploitable buffer overflow vulnerability exists in the tag parsing functionality of LibOFX 0.9.11. A specially crafted OFX file can cause a write out of bounds resulting in a buffer overflow on the stack. An attacker can construct a malicious OFX file to trigger this vulnerability.
https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0317
https://security.gentoo.org/glsa/201908-26
https://lists.debian.org/debian-lts-announce/2017/11/msg00038.html