[IT-SecNots] [Security-news] Entity Browser - Moderately critical - Cross site scripting - SA-CONTRIB-2026-094

[security-news AT drupal.org]

View online: https://www.drupal.org/sa-contrib-2026-094

Project: Entity Browser [1]
Date: 2026-August-05
Security risk: *Moderately critical* 12 ∕ 25
AC:Basic/A:Admin/CI:Some/II:Some/E:Theoretical/TD:Default [2]
Vulnerability: Cross site scripting

Affected versions: <2.16.0
CVE IDs: CVE-2026-18986
Description: 
The Entity Browser module allows you to select entities from entity reference
fields using a custom entity browser widget.

The module doesn't sufficiently sanitize the the tab titles, resulting in a
stored cross-site scripting (XSS) vulnerability.

The vulnerability is mitigated by the fact an attacker must be able to insert
HTML with specific attributes on a page that is displaying an entity browser.

Solution: 
Install the latest version:

 * If you use the Entity Browser module, upgrade to Entity Browser 8.x-2.16
   [3]

Reported By: 
 * Pierre Rudloff (prudloff) [4] of the Drupal Security Team

Fixed By: 
 * Julian Pustkuchen (anybody) [5]
 * Sascha Grossenbacher (berdir) [6]
 * Pierre Rudloff (prudloff) [7] of the Drupal Security Team

Coordinated By: 
 * Greg Knaddison (greggles) [8] of the Drupal Security Team
 * Drew Webber (mcdruid) [9] of the Drupal Security Team
 * Pierre Rudloff (prudloff) [10] of the Drupal Security Team

------------------------------------------------------------------------------
Contribution record [11]

[1] https://www.drupal.org/project/entity_browser
[2] https://www.drupal.org/security-team/risk-levels
[3] https://www.drupal.org/project/entity_browser/releases/8.x-2.16
[4] https://www.drupal.org/u/prudloff
[5] https://www.drupal.org/u/anybody
[6] https://www.drupal.org/u/berdir
[7] https://www.drupal.org/u/prudloff
[8] https://www.drupal.org/u/greggles
[9] https://www.drupal.org/u/mcdruid
[10] https://www.drupal.org/u/prudloff
[11]  
https://new.drupal.org/contribution-record?source_link=https%3A//www.drupal.org/node/3613487

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