CVE-2021-29996: Marktext

Critical severity, CVSS 9.6. EPSS: 2.8% chance of exploitation in the next 30 days.

Mark Text through 0.16.3 allows attackers arbitrary command execution. This could lead to Remote Code Execution (RCE) by opening .md files containing a mutation Cross Site Scripting (XSS) payload.

Affected products

• Marktext Marktext: up to and including 0.16.3

Published 2021-04-05. Last modified 2026-06-17.