CVE-2020-27176: Marktext

Critical severity, CVSS 9.6. EPSS: 1.9% chance of exploitation in the next 30 days.

Mutation XSS exists in Mark Text through 0.16.2 that leads to Remote Code Execution. NOTE: this might be considered a duplicate of CVE-2020-26870; however, it can also be considered an issue in the design of the "source code mode" feature, which parses HTML even though HTML support is not one of the primary advertised roles of the product.

Affected products

• Marktext Marktext: up to and including 0.16.2

Published 2020-10-16. Last modified 2026-06-17.