Authorization bypass through user-controlled key in Craft CMS - CVE-2026-28782
Published: June 16, 2026
Vulnerability identifier: #VU134651
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-28782
CWE-ID: CWE-639
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 bypass authorization and access restricted content.
The vulnerability exists due to improper access control in the Duplicate entry action when handling direct requests with user-controlled Entry IDs. A remote user can send a specially crafted request to bypass authorization and access restricted content.
The issue can be exploited by a user with only "View Entries" permission, and incremental Entry IDs make brute-force enumeration possible.
How to mitigate CVE-2026-28782
Install security update from vendor's website.