CVE-2020-26298: Debian Linux

Medium severity, CVSS 5.4. EPSS: 1.6% chance of exploitation in the next 30 days.

Redcarpet is a Ruby library for Markdown processing. In Redcarpet before version 3.5.1, there is an injection vulnerability which can enable a cross-site scripting attack. In affected versions no HTML escaping was being performed when processing quotes. This applies even when the `:escape_html` option was being used. This is fixed in version 3.5.1 by the referenced commit.

Affected products

• Debian Debian Linux: version 9.0 only; version 10.0 only
• Redcarpet Project Redcarpet: before 3.5.1 (fixed in 3.5.1)

Published 2021-01-11. Last modified 2026-06-17.