CVE-2026-3211 Theme Negotiation by Rules - Moderately critical - Cross-site request forgery - SA-CONTRIB-2026-012
Attackers can trick authenticated users into performing unintended actions via CSRF in the Theme Negotiation by Rules module.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-3211?
CVE-2026-3211 is a medium-severity vulnerability in Drupal Theme Negotiation by Rules, published on 25 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Cross-Site Request Forgery (CSRF) vulnerability in Drupal Theme Negotiation by Rules allows Cross Site Request Forgery.This issue affects Theme Negotiation by Rules: from 0.0.0 before 1.2.1.
Weakness: CWE-352
Which versions are affected by CVE-2026-3211?
It affects 1 product.
Linux distribution packages (1)
drupal/theme_rule Packagist:https://packages.drupal.org/8 | All versions | 1.2.1 |
Products include Webikon Theme Negotiation by Rules.
How do I fix CVE-2026-3211?
Upgrade to a fixed version.
Is CVE-2026-3211 being exploited?
There is no known exploitation of CVE-2026-3211 in the wild and no public exploit code.
Sources
Also known as DRUPAL-CONTRIB-2026-012, GHSA-rf5j-2h6w-f75m.