---
title: "Clear your calendar, Drupal user: You have a critically urgent patch to install"
url: https://daily.dev/posts/clear-your-calendar-drupal-user-you-have-a-critically-urgent-patch-to-install-xbhcceeep
source_url: https://www.theregister.com/patches/2026/05/19/drupal-warns-admins-to-brace-for-highly-critical-core-patch/5242728
type: article
source: "The Register"
published: 2026-05-19T16:01:21.147Z
updated: 2026-05-20T15:23:16.697Z
tags: ["php", "vulnerability", "cms"]
reading_time: 5
upvotes: 0
comments: 0
language: en
---

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# Clear your calendar, Drupal user: You have a critically urgent patch to install

**[The Register](https://daily.dev/sources/theregister)** · 5 min read · 0 upvotes · 0 comments

## Summary

Drupal has issued a highly critical security patch for its core CMS, urging administrators to apply it immediately. The organization is withholding vulnerability details but the fixes extend back to the unsupported 8.9 branch, signaling the severity of the issue. Drupal site owners should prioritize patching without delay.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://www.theregister.com/patches/2026/05/19/drupal-warns-admins-to-brace-for-highly-critical-core-patch/5242728>

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---

Tags: [#php](https://daily.dev/tags/php), [#vulnerability](https://daily.dev/tags/vulnerability), [#cms](https://daily.dev/tags/cms)

[View this post on daily.dev](https://daily.dev/posts/clear-your-calendar-drupal-user-you-have-a-critically-urgent-patch-to-install-xbhcceeep)