1. Ubuntu Security Notices
  2. USN-6787-1

USN-6787-1: Jinja2 vulnerability

Publication date

28 May 2024

Overview

Jinja2 could allow cross-site scripting (XSS) attacks.

Releases

Packages

  • jinja2 - small but fast and easy to use stand-alone template engine

Details

It was discovered that Jinja2 incorrectly handled certain HTML attributes
that were accepted by the xmlattr filter. An attacker could use this issue
to inject arbitrary HTML attribute keys and values to potentially execute
a cross-site scripting (XSS) attack.

It was discovered that Jinja2 incorrectly handled certain HTML attributes
that were accepted by the xmlattr filter. An attacker could use this issue
to inject arbitrary HTML attribute keys and values to potentially execute
a cross-site scripting (XSS) attack.

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
24.04 noble python3-jinja2 –  3.1.2-1ubuntu1.1
23.10 mantic python3-jinja2 –  3.1.2-1ubuntu0.23.10.2
22.04 jammy python3-jinja2 –  3.0.3-1ubuntu0.2
20.04 focal python-jinja2 –  2.10.1-2ubuntu0.3
python3-jinja2 –  2.10.1-2ubuntu0.3
18.04 bionic python-jinja2 –  2.10-1ubuntu0.18.04.1+esm2  
python3-jinja2 –  2.10-1ubuntu0.18.04.1+esm2  
16.04 xenial python-jinja2 –  2.8-1ubuntu0.1+esm3  
python3-jinja2 –  2.8-1ubuntu0.1+esm3  
14.04 trusty python-jinja2 –  2.7.2-2ubuntu0.1~esm3  
python3-jinja2 –  2.7.2-2ubuntu0.1~esm3  

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›