Blazy security updates, in plain English

Blazy

79,986 sites report using it · on drupal.org · 1 security update explained here

This module speeds up the website by only loading images and media when they scroll into view.

Below is every security update for Blazy 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.

Blazy

Less critical · 79,986 sites report using it · SA-CONTRIB-2026-104 · on drupal.org · Week of 26 August 2026

An ordinary account on the site could use a special text code to display a specific part of a piece of content they are not allowed to view. This would let them read private information from that specific part. They could not change any information.

Who could do thisOnly someone with a login on your site.
Does it apply to youA site is affected if a user has access to a text format that uses this module.
Has it been used in attacksNo sign of it.
How urgentDrupal rates this less critical. Fix it with the next routine update.

Tell your developerUpdate Blazy to 3.0.18.

For developers: what the fix changed

The provided diff does not appear to contain the fix for the access bypass vulnerability, as there are no changes related to entity view access checks or filter plugin shortcode rendering logic.

The fix is not clearly separable from the other changes in this release, so treat the summary above as a pointer rather than a finding.

Also in this release The release refactored hooks for Drupal 12 compatibility, updated documentation, modified JavaScript for media handling, and adjusted service definitions.

3.0.17 to 3.0.18 61 commits, 225 files including 25 tests.

.eslintignore +11 −0
.eslintrc.json +2 −1
.gitattributes +6 −0
.gitignore +4 −0
.gitlab-ci.yml +5 −0
CHANGELOG.txt +51 −0
blazy.api.php +38 −4
blazy.install +1 −1
blazy.libraries.yml +7 −4
blazy.module +20 −109
blazy.services.yml +74 −35
config/install/blazy.settings.yml +2 −0

Full diff, 3.0.17 to 3.0.18

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

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.

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.

Blazy

Blazy

Send me your Drupal site's address.

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Reference