CVE-2018-11547: MD4C Project MD4C

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

md_is_link_reference_definition_helper in md4c 0.2.5 has a heap-based buffer over-read because md_is_link_label mishandles loop termination.

Affected products

• MD4C Project MD4C: version 0.2.5 only

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