Peter Brady, Drupal developer and private AI consultant

Drupal security updates, in plain English

Week of 1 April 2026

Drupal publishes security updates on Wednesdays. This week there was one, for a module.

None for Drupal core, so nothing here applies to every site.

Each card says what the module does, what went wrong, who could do it, whether it applies to you, how urgent it is, and the one line to send to your developer. Worst rated first, and most used first within a rating.

New here? How Drupal security updates work explains who publishes these, why they matter and what the ratings mean. Earlier weeks and a search by module are on the main page.

Critical: 1 update

Cyber Essentials expects a fix within 14 days. Do it this week.

SAML SSO - Service Provider

Critical · 2,587 sites report using it · SA-CONTRIB-2026-031 · on drupal.org

This module lets people log in to the website using a single sign on system linked to an external provider like Google or Microsoft.

The module fails to block access properly. A person without an account could skip the login process to enter the site. Once inside they could read any private information and change any data or website code.

  • 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 SAML SSO - Service Provider to 3.1.4.

For developers: what the fix changed

The fix uncomments `exit();` statements in `src/Utilities.php` to properly halt execution when SAML signature validation fails, preventing the authentication bypass.

Also in this release Added XSS filtering to test results and audience validation, and disabled network access in XML loading to prevent XXE.

3.1.3 to 3.1.4 1 commit, 2 files.

  • src/MiniOrangeSamlAcs.php +7 −6
  • src/Utilities.php +8 −8 fix

Full diff, 3.1.3 to 3.1.4

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

Not sure what your site is running?

Send me your Drupal site's address.

I'll tell you what I can see from outside, what the Drupal 10 end of life on 9 December means for it, and what it would cost to have me keep it patched. There's no charge for that and no obligation. peter@peterbrady.co.uk

Compiled 10 October 2026 as part of the archive back to January 2026, from the advisories published by the Drupal security team on drupal.org. The facts on each card are theirs. The plain English is mine, with help from a language model. In the archive the cards rated critical or above were read before publishing and the rest were checked by sampling. Install counts are today's, not the count on the day of the advisory.

Get in touch

Tell me who you are, what your organisation does, and what you need. That might be a Drupal site that needs looking after, an upgrade to get done before December, or an agency that needs Drupal cover.

If I can help, I'll say so and suggest a call. If I can't, I'll tell you straight away rather than waste your time.

peter@peterbrady.co.uk

For context: I work mainly with UK charities, membership bodies and research organisations, and with the agencies that look after their websites. Not recruiters.

Or start smaller and connect with me on LinkedIn. That's where I post what I find digging around in charity and grants data, and where the free tools turn up first.

Peter Brady, Drupal developer and private AI consultant

PNB Technologies Limited
55 Yew Tree Road, Ormskirk
Lancashire, L39 1NT, United Kingdom

Company Reg: 07166600
VAT Reg: GB986726850

© 2026 Peter Brady. All rights reserved.

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