USN-9060-1: kramdown vulnerability

Publication date

11 November 2026

Overview

kramdown could be made to expose sensitive information or run programs if it opened a specially crafted file.


Packages

Details

It was discovered that kramdown processed the template option in documents
by default. An attacker could possibly use this issue to read arbitrary
files or execute arbitrary code.

It was discovered that kramdown processed the template option in documents
by default. An attacker could possibly use this issue to read arbitrary
files or execute arbitrary code.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
18.04 LTS bionic ruby-kramdown –  1.15.0-1ubuntu0.1~esm1  
16.04 LTS xenial ruby-kramdown –  1.10.0-1ubuntu0.1~esm1

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