CVE-2018-11545: MD4C Project MD4C

Critical severity, CVSS 9.8. EPSS: 1.6% chance of exploitation in the next 30 days.

md4c 0.2.5 has a heap-based buffer overflow in md_merge_lines because md_is_link_label mishandles the case of a link label composed solely of backslash escapes.

Affected products

Published 2018-05-29. Last modified 2026-06-17.