LowDRUPAL-CORE-2026-011CVE-2026-15917

DRUPAL-CORE-2026-011 in drupal/core

Published 15 Jul 2026 · Updated 15 Jul 2026

Affected package

Affected: >=11.3.0 <11.3.14 · >=11.4.0 <11.4.4 · >=11.2.0 <11.3.0
Fixed in: 11.3.0, 11.3.14, 11.4.4

Update to the fixed version for your release line, for example:composer require drupal/core:^11.4.4

Details

Drupal core 11.2 and above integrate the HTMX JavaScript library.

Drupal core's XSS filter does not sufficiently sanitize certain HTMX attributes, which can lead to a cross-site scripting (XSS) vulnerability.

The vulnerability is mitigated by the fact an attacker must be able to insert HTML with specific attributes.

Is DRUPAL-CORE-2026-011 in any of your client repos?

Checking one package by hand is fine. Checking it across forty client projects is not. NPMscan reads the lockfiles in every GitHub repo you pick, finds each project with an affected drupal/core, and gives you the command that fixes it.

Scan a project free, no signup Or connect GitHub to scan every repo

References

Linkwww.drupal.org/sa-core-2026-011

Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.