CVE-2026-6367

medium

Published 2026-05-19 · Modified 2026-05-21

CVSS v3

6.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v2

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VIR risk

6.1

Description

Drupal 11.3 comes with support for completing entity suggestions whilst adding a link to CKEditor 5. The suggestions aren't sufficiently sanitized and a malicious user could trigger a stored cross site scripting attack against another user.

Predictions

Exploit likelihood

71%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: mlhess@drupal.org — https://www.drupal.org/sa-core-2026-003

Package impact

Ecosystem	Package	Vulnerable	Fixed
Packagist	drupal/core	`>=11.3.0,<11.3.7`	`11.3.7`

Application impact

Vendor	Product	Versions	Fixed
drupal	drupal	`{"startIncluding":"11.3.0","endExcluding":"11.3.7"}`	`11.3.7`

References

https://www.drupal.org/sa-core-2026-003

CWEs

CWE-79

Verify integrity in audit chain (admin only). AS-IS.