CVE-2018-11503: Debian Linux

Medium severity, CVSS 5.5. EPSS: 1.6% chance of exploitation in the next 30 days.

The isfootnote function in markdown.c in libmarkdown.a in DISCOUNT 2.2.3a allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted file, as demonstrated by mkd2html.

Affected products

• Debian Debian Linux: version 8.0 only; version 9.0 only
• Discount Project Discount: version 2.2.3 only

Published 2018-05-26. Last modified 2026-06-17.