CVE-2026-1553 Drupal Canvas - Moderately critical - Access bypass - SA-CONTRIB-2026-006

Medium 4.8 Published 4 Feb 2026 Updated 4 Feb 2026

Attackers can bypass authorization controls in the Drupal Canvas module to access restricted resources via forceful browsing.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2026-1553?

CVE-2026-1553 is a medium-severity missing authorization vulnerability in Drupal Canvas, published on 4 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Incorrect Authorization vulnerability in Drupal Drupal Canvas allows Forceful Browsing.This issue affects Drupal Canvas: from 0.0.0 before 1.0.4.

Weakness: CWE-863

Which versions are affected by CVE-2026-1553?

It affects 1 product.

Linux distribution packages (1)

drupal/canvas Packagist:https://packages.drupal.org/8 All versions 1.0.4

Products include Drupal Canvas Project Drupal Canvas.

How do I fix CVE-2026-1553?

Upgrade to a fixed version.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-1553 being exploited?

There is no known exploitation of CVE-2026-1553 in the wild and no public exploit code.

Sources

Also known as DRUPAL-CONTRIB-2026-006, GHSA-mv4x-xj43-wwww.