CVE-2026-15917
Published:July 15, 2026
Updated:August 02, 2026
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.
Affected Packages
https://git.drupalcode.org/project/drupal.git (SCM_GIT):
Affected version(s) >=11.4.0 <11.4.4Fix Suggestion:
Update to version 11.4.4https://git.drupalcode.org/project/drupal.git (SCM_GIT):
Affected version(s) >=11.3.0 <11.3.14Fix Suggestion:
Update to version 11.3.14Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE