MathJax: LaTeX for Drupal security updates, in plain English

MathJax: LaTeX for Drupal

8,240 sites report using it · on drupal.org · 1 security release explained here

It integrates a mathematical rendering library into a website.

Below is every security release for MathJax: LaTeX for Drupal that this site has covered, newest first. Each one says who could exploit it, whether it applies to your site, how urgent it is, and what to tell your developer. If your site uses this module and you are not sure which version, that is the first question to ask whoever looks after it.

MathJax: LaTeX for Drupal

Critical · 8,240 sites report using it · SA-CONTRIB-2026-195 · on drupal.org · Week of 7 October 2026

It integrates a mathematical rendering library into a website.

A user could hide malicious scripts inside math formulas. These scripts could run in the web browser of anyone reading the page. This could let someone read or alter hidden data.

Who could do thisAnyone visiting the site. No login needed.
Does it apply to youAny site using this module.
Has it been used in attacksNo sign of it.
How urgentDrupal rates this critical. Cyber Essentials expects a fix within 14 days. Do it this week.

Tell your developerUpdate MathJax: LaTeX for Drupal to 4.1.2.

For developers: what the fix changed

The fix updates the default configuration in config/install/mathjax.settings.yml and the library definition in mathjax.module to include the Safe mode parameter in the content delivery network URL. It also adds a requirements check and an update hook in mathjax.install to warn administrators and update existing configurations.

Also in this release The release updates an insecure content delivery network version warning in mathjax.install.

4.1.1 to 4.1.2 1 commit, 3 files.

config/install/mathjax.settings.yml +1 −1 fix
mathjax.install +56 −8 fix
mathjax.module +1 −1 fix

Full diff, 4.1.1 to 4.1.2

The comparison is against the release immediately before the fix. If your site is on an older release, more will have changed.

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MathJax: LaTeX for Drupal

MathJax: LaTeX for Drupal

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