Improper access control in Craft CMS - CVE-2026-28696
Published: June 16, 2026
Vulnerability identifier: #VU134653
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-28696
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Pixel & Tonic, Inc.
Affected software:
Craft CMS
Craft CMS
Detailed vulnerability description
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to improper access control in the GraphQL `@parseRefs` directive and `craft\services\Elements::parseRefs` when parsing user-supplied internal reference tags in GraphQL content. A remote user can inject a crafted reference tag to disclose sensitive information.
Unauthenticated exploitation is possible if a Public Schema is enabled.
How to mitigate CVE-2026-28696
Install security update from vendor's website.